diff --git a/ui/index.html b/ui/index.html
index a8865e92..b416b7eb 100644
--- a/ui/index.html
+++ b/ui/index.html
@@ -6,8 +6,8 @@
     <link rel="icon" type="image/png" href="/media/images/favicon-16x16.png" sizes="16x16">
     <link rel="icon" type="image/png" href="/media/images/favicon-32x32.png" sizes="32x32">
     <link rel="stylesheet" href="/media/css/fonts.css?v=1">
-    <link rel="stylesheet" href="/media/css/themes.css?v=2">
-    <link rel="stylesheet" href="/media/css/main.css?v=15">
+    <link rel="stylesheet" href="/media/css/themes.css?v=3">
+    <link rel="stylesheet" href="/media/css/main.css?v=16">
     <link rel="stylesheet" href="/media/css/auto-save.css?v=5">
     <link rel="stylesheet" href="/media/css/modifier-thumbnails.css?v=4">
     <link rel="stylesheet" href="/media/css/fontawesome-all.min.css?v=1">
@@ -19,7 +19,7 @@
 <div id="container">
     <div id="top-nav">
         <div id="logo">
-            <h1>Stable Diffusion UI <small>v2.4.2 <span id="updateBranchLabel"></span></small></h1>
+            <h1>Stable Diffusion UI <small>v2.4.3 <span id="updateBranchLabel"></span></small></h1>
         </div>
         <div id="server-status">
             <div id="server-status-color">●</div>
@@ -240,6 +240,8 @@
                 <h1>System Settings</h1>
                 <table class="form-table"></table>
                 <br/>
+                <button id="save-system-settings-btn" class="primaryButton">Save</button>
+                <br/><br/>
                 <div>
                     <h3><i class="fa fa-microchip icon"></i> System Info</h3>
                     <div id="system-info"></div>
@@ -322,13 +324,13 @@
 </div>
 </body>
 
-<script src="media/js/parameters.js?v=7"></script>
+<script src="media/js/parameters.js?v=8"></script>
 <script src="media/js/plugins.js?v=1"></script>
 <script src="media/js/utils.js?v=6"></script>
 <script src="media/js/inpainting-editor.js?v=1"></script>
 <script src="media/js/image-modifiers.js?v=6"></script>
 <script src="media/js/auto-save.js?v=8"></script>
-<script src="media/js/main.js?v=21"></script>
+<script src="media/js/main.js?v=22"></script>
 <script src="media/js/themes.js?v=4"></script>
 <script src="media/js/dnd.js?v=9"></script>
 <script>
diff --git a/ui/media/css/main.css b/ui/media/css/main.css
index 1b2d2b1e..ec2a7ccb 100644
--- a/ui/media/css/main.css
+++ b/ui/media/css/main.css
@@ -162,7 +162,7 @@ label {
 #makeImage {
     flex: 0 0 70px;
     background: var(--accent-color);
-    border: var(--make-image-border);
+    border: var(--primary-button-border);
     color: rgb(255, 221, 255);
     width: 100%;
     height: 30pt;
@@ -420,6 +420,12 @@ img {
     border: 1px solid rgb(107, 75, 0);
     color:rgb(255, 242, 211)
 }
+.primaryButton {
+    flex: 0 0 70px;
+    background: var(--accent-color);
+    border: var(--primary-button-border);
+    color: rgb(255, 221, 255);
+}
 .secondaryButton {
     background: rgb(132, 8, 0);
     border: 1px solid rgb(122, 29, 0);
@@ -903,3 +909,6 @@ i.active {
     float: right;
     font-weight: bold;
 }
+#save-system-settings-btn {
+    padding: 4pt 8pt;
+}
diff --git a/ui/media/css/themes.css b/ui/media/css/themes.css
index 01046ca9..0f889ec9 100644
--- a/ui/media/css/themes.css
+++ b/ui/media/css/themes.css
@@ -23,7 +23,7 @@
     --input-border-size: 1px; 
     --accent-color: hsl(var(--accent-hue), 100%, var(--accent-lightness));
     --accent-color-hover: hsl(var(--accent-hue), 100%, var(--accent-lightness-hover));
-    --make-image-border: 2px solid hsl(var(--accent-hue), 100%, calc(var(--accent-lightness) - 21%));
+    --primary-button-border: none;
 }
 
 .theme-light {
@@ -47,7 +47,7 @@
     
     --accent-hue: 235;
     --accent-lightness: 65%;
-    --make-image-border: none;
+    --primary-button-border: none;
     
     --button-color: var(--accent-color);
     --button-border: none;
@@ -69,7 +69,7 @@
 	--background-color4: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) - (3 * var(--value-step))));
     
     --accent-hue: 212;
-    --make-image-border: none;
+    --primary-button-border: none;
 
     --button-color: var(--accent-color);
     --button-border: none;
@@ -91,7 +91,7 @@
 	--background-color3: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) - (2 * var(--value-step))));
 	--background-color4: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) - (3 * var(--value-step))));
     
-    --make-image-border: none;
+    --primary-button-border: none;
 
     --button-color: var(--accent-color);
     --button-border: none;
@@ -112,7 +112,7 @@
 	--background-color3: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) + (2 * var(--value-step))));
 	--background-color4: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) + (1.4 * var(--value-step))));
     
-    --make-image-border: none;
+    --primary-button-border: none;
 
     --button-color: var(--accent-color);
     --button-border: none;
@@ -134,7 +134,7 @@
 	--background-color4: hsl(var(--main-hue), var(--main-saturation), calc(var(--value-base) - (3 * var(--value-step))));
     
     --accent-hue: 212;
-    --make-image-border: none;
+    --primary-button-border: none;
 
     --button-color: var(--accent-color);
     --button-border: none;
diff --git a/ui/media/js/main.js b/ui/media/js/main.js
index 23f0ef74..f9e21fa7 100644
--- a/ui/media/js/main.js
+++ b/ui/media/js/main.js
@@ -25,15 +25,6 @@ let initImagePreview = document.querySelector("#init_image_preview")
 let initImageSizeBox = document.querySelector("#init_image_size_box")
 let maskImageSelector = document.querySelector("#mask")
 let maskImagePreview = document.querySelector("#mask_preview")
-let turboField = document.querySelector('#turbo')
-let useCPUField = document.querySelector('#use_cpu')
-let autoPickGPUsField = document.querySelector('#auto_pick_gpus')
-let useGPUsField = document.querySelector('#use_gpus')
-let useFullPrecisionField = document.querySelector('#use_full_precision')
-let saveToDiskField = document.querySelector('#save_to_disk')
-let diskPathField = document.querySelector('#diskPath')
-// let allowNSFWField = document.querySelector("#allow_nsfw")
-let useBetaChannelField = document.querySelector("#use_beta_channel")
 let promptStrengthSlider = document.querySelector('#prompt_strength_slider')
 let promptStrengthField = document.querySelector('#prompt_strength')
 let samplerField = document.querySelector('#sampler')
@@ -60,21 +51,10 @@ let initialText = document.querySelector("#initial-text")
 let previewTools = document.querySelector("#preview-tools")
 let clearAllPreviewsBtn = document.querySelector("#clear-all-previews")
 
-// let maskSetting = document.querySelector('#editor-inputs-mask_setting')
-// let maskImagePreviewContainer = document.querySelector('#mask_preview_container')
-// let maskImageClearBtn = document.querySelector('#mask_clear')
 let maskSetting = document.querySelector('#enable_mask')
 
 let imagePreview = document.querySelector("#preview")
 
-// let previewPrompt = document.querySelector('#preview-prompt')
-
-let showConfigToggle = document.querySelector('#configToggleBtn')
-// let configBox = document.querySelector('#config')
-// let outputMsg = document.querySelector('#outputMsg')
-
-let soundToggle = document.querySelector('#sound_toggle')
-
 let serverStatusColor = document.querySelector('#server-status-color')
 let serverStatusMsg = document.querySelector('#server-status-msg')
 
@@ -1093,15 +1073,16 @@ function onDimensionChange() {
 }
 
 diskPathField.disabled = !saveToDiskField.checked
-saveToDiskField.addEventListener('change', function(e) {
-    diskPathField.disabled = !this.checked
-})
 
 upscaleModelField.disabled = !useUpscalingField.checked
 useUpscalingField.addEventListener('change', function(e) {
     upscaleModelField.disabled = !this.checked
 })
 
+if (useBetaChannelField.checked) {
+    updateBranchLabel.innerText = "(beta)"
+}
+
 makeImageBtn.addEventListener('click', makeImage)
 
 document.onkeydown = function(e) {
@@ -1151,114 +1132,6 @@ promptStrengthSlider.addEventListener('input', updatePromptStrength)
 promptStrengthField.addEventListener('input', updatePromptStrengthSlider)
 updatePromptStrength()
 
-function getCurrentRenderDeviceSelection() {
-    let selectedGPUs = $('#use_gpus').val()
-
-    if (useCPUField.checked && !autoPickGPUsField.checked) {
-        return 'cpu'
-    }
-    if (autoPickGPUsField.checked || selectedGPUs.length == 0) {
-        return 'auto'
-    }
-
-    return selectedGPUs.join(',')
-}
-
-useCPUField.addEventListener('click', function() {
-    let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
-    let autoPickGPUSettingEntry = getParameterSettingsEntry('auto_pick_gpus')
-    if (this.checked) {
-        gpuSettingEntry.style.display = 'none'
-        autoPickGPUSettingEntry.style.display = 'none'
-        autoPickGPUsField.setAttribute('data-old-value', autoPickGPUsField.checked)
-        autoPickGPUsField.checked = false
-    } else if (useGPUsField.options.length >= MIN_GPUS_TO_SHOW_SELECTION) {
-        gpuSettingEntry.style.display = ''
-        autoPickGPUSettingEntry.style.display = ''
-        let oldVal = autoPickGPUsField.getAttribute('data-old-value')
-        if (oldVal === null || oldVal === undefined) { // the UI started with CPU selected by default
-            autoPickGPUsField.checked = true
-        } else {
-            autoPickGPUsField.checked = (oldVal === 'true')
-        }
-        gpuSettingEntry.style.display = (autoPickGPUsField.checked ? 'none' : '')
-    }
-
-    changeAppConfig({
-        'render_devices': getCurrentRenderDeviceSelection()
-    })
-})
-
-useGPUsField.addEventListener('click', function() {
-    let selectedGPUs = $('#use_gpus').val()
-    autoPickGPUsField.checked = (selectedGPUs.length === 0)
-
-    changeAppConfig({
-        'render_devices': getCurrentRenderDeviceSelection()
-    })
-})
-
-autoPickGPUsField.addEventListener('click', function() {
-    if (this.checked) {
-        $('#use_gpus').val([])
-    }
-
-    let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
-    gpuSettingEntry.style.display = (this.checked ? 'none' : '')
-
-    changeAppConfig({
-        'render_devices': getCurrentRenderDeviceSelection()
-    })
-})
-
-async function changeAppConfig(configDelta) {
-    // if (!isServerAvailable()) {
-    //     // logError('The server is still starting up..')
-    //     alert('The server is still starting up..')
-    //     e.preventDefault()
-    //     return false
-    // }
-
-    try {
-        let res = await fetch('/app_config', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify(configDelta)
-        })
-        res = await res.json()
-
-        console.log('set config status response', res)
-    } catch (e) {
-        console.log('set config status error', e)
-    }
-}
-
-useBetaChannelField.addEventListener('click', async function(e) {
-    let updateBranch = (this.checked ? 'beta' : 'main')
-
-    await changeAppConfig({
-        'update_branch': updateBranch
-    })
-})
-
-async function getAppConfig() {
-    try {
-        let res = await fetch('/get/app_config')
-        const config = await res.json()
-
-        if (config.update_branch === 'beta') {
-            useBetaChannelField.checked = true
-            updateBranchLabel.innerText = "(beta)"
-        }
-
-        console.log('get config status response', config)
-    } catch (e) {
-        console.log('get config status error', e)
-    }
-}
-
 async function getModels() {
     try {
         var sd_model_setting_key = "stable_diffusion_model"
@@ -1395,70 +1268,6 @@ promptsFromFileSelector.addEventListener('change', function() {
     }
 })
 
-async function getDiskPath() {
-    try {
-        var diskPath = getSetting("diskPath")
-        if (diskPath == '' || diskPath == undefined || diskPath == "undefined") {
-            let res = await fetch('/get/output_dir')
-            if (res.status === 200) {
-                res = await res.json()
-                res = res.output_dir
-
-                setSetting("diskPath", res)
-            }
-        }
-    } catch (e) {
-        console.log('error fetching output dir path', e)
-    }
-}
-
-async function getDevices() {
-    try {
-        let res = await fetch('/get/devices')
-        if (res.status === 200) {
-            res = await res.json()
-
-            let allDeviceIds = Object.keys(res['all']).filter(d => d !== 'cpu')
-            let activeDeviceIds = Object.keys(res['active']).filter(d => d !== 'cpu')
-
-            if (activeDeviceIds.length === 0) {
-                useCPUField.checked = true
-            }
-
-            if (allDeviceIds.length < MIN_GPUS_TO_SHOW_SELECTION || useCPUField.checked) {
-                let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
-                gpuSettingEntry.style.display = 'none'
-                let autoPickGPUSettingEntry = getParameterSettingsEntry('auto_pick_gpus')
-                autoPickGPUSettingEntry.style.display = 'none'
-            }
-
-            if (allDeviceIds.length === 0) {
-                useCPUField.checked = true
-                useCPUField.disabled = true // no compatible GPUs, so make the CPU mandatory
-            }
-
-            autoPickGPUsField.checked = (res['config'] === 'auto')
-
-            useGPUsField.innerHTML = ''
-            allDeviceIds.forEach(device => {
-                let deviceName = res['all'][device]['name']
-                let deviceOption = `<option value="${device}">${deviceName} (${device})</option>`
-                useGPUsField.insertAdjacentHTML('beforeend', deviceOption)
-            })
-
-            if (autoPickGPUsField.checked) {
-                let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
-                gpuSettingEntry.style.display = 'none'
-            } else {
-                $('#use_gpus').val(activeDeviceIds)
-            }
-        }
-    } catch (e) {
-        console.log('error fetching devices', e)
-    }
-}
-
-
 /* setup popup handlers */
 document.querySelectorAll('.popup').forEach(popup => {
     popup.addEventListener('click', event => {
diff --git a/ui/media/js/parameters.js b/ui/media/js/parameters.js
index ec49ebc3..e61c4619 100644
--- a/ui/media/js/parameters.js
+++ b/ui/media/js/parameters.js
@@ -1,5 +1,3 @@
-
-
 /**
  * Enum of parameter types
  * @readonly
@@ -135,7 +133,7 @@ function getParameterElement(parameter) {
 	}
 }
 
-var parametersTable = document.querySelector("#system-settings table")
+let parametersTable = document.querySelector("#system-settings table")
 /* fill in the system settings popup table */
 function initParameters() {
 	PARAMETERS.forEach(parameter => {
@@ -150,5 +148,171 @@ function initParameters() {
 	})
 }
 
-initParameters();
+initParameters()
 
+let turboField = document.querySelector('#turbo')
+let useCPUField = document.querySelector('#use_cpu')
+let autoPickGPUsField = document.querySelector('#auto_pick_gpus')
+let useGPUsField = document.querySelector('#use_gpus')
+let useFullPrecisionField = document.querySelector('#use_full_precision')
+let saveToDiskField = document.querySelector('#save_to_disk')
+let diskPathField = document.querySelector('#diskPath')
+let useBetaChannelField = document.querySelector("#use_beta_channel")
+
+let saveSettingsBtn = document.querySelector('#save-system-settings-btn')
+
+async function changeAppConfig(configDelta) {
+    try {
+        let res = await fetch('/app_config', {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json'
+            },
+            body: JSON.stringify(configDelta)
+        })
+        res = await res.json()
+
+        console.log('set config status response', res)
+    } catch (e) {
+        console.log('set config status error', e)
+    }
+}
+
+async function getAppConfig() {
+    try {
+        let res = await fetch('/get/app_config')
+        const config = await res.json()
+
+        if (config.update_branch === 'beta') {
+            useBetaChannelField.checked = true
+        }
+
+        console.log('get config status response', config)
+    } catch (e) {
+        console.log('get config status error', e)
+    }
+}
+
+saveToDiskField.addEventListener('change', function(e) {
+    diskPathField.disabled = !this.checked
+})
+
+function getCurrentRenderDeviceSelection() {
+    let selectedGPUs = $('#use_gpus').val()
+
+    if (useCPUField.checked && !autoPickGPUsField.checked) {
+        return 'cpu'
+    }
+    if (autoPickGPUsField.checked || selectedGPUs.length == 0) {
+        return 'auto'
+    }
+
+    return selectedGPUs.join(',')
+}
+
+useCPUField.addEventListener('click', function() {
+    let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
+    let autoPickGPUSettingEntry = getParameterSettingsEntry('auto_pick_gpus')
+    if (this.checked) {
+        gpuSettingEntry.style.display = 'none'
+        autoPickGPUSettingEntry.style.display = 'none'
+        autoPickGPUsField.setAttribute('data-old-value', autoPickGPUsField.checked)
+        autoPickGPUsField.checked = false
+    } else if (useGPUsField.options.length >= MIN_GPUS_TO_SHOW_SELECTION) {
+        gpuSettingEntry.style.display = ''
+        autoPickGPUSettingEntry.style.display = ''
+        let oldVal = autoPickGPUsField.getAttribute('data-old-value')
+        if (oldVal === null || oldVal === undefined) { // the UI started with CPU selected by default
+            autoPickGPUsField.checked = true
+        } else {
+            autoPickGPUsField.checked = (oldVal === 'true')
+        }
+        gpuSettingEntry.style.display = (autoPickGPUsField.checked ? 'none' : '')
+    }
+})
+
+useGPUsField.addEventListener('click', function() {
+    let selectedGPUs = $('#use_gpus').val()
+    autoPickGPUsField.checked = (selectedGPUs.length === 0)
+})
+
+autoPickGPUsField.addEventListener('click', function() {
+    if (this.checked) {
+        $('#use_gpus').val([])
+    }
+
+    let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
+    gpuSettingEntry.style.display = (this.checked ? 'none' : '')
+})
+
+async function getDiskPath() {
+    try {
+        var diskPath = getSetting("diskPath")
+        if (diskPath == '' || diskPath == undefined || diskPath == "undefined") {
+            let res = await fetch('/get/output_dir')
+            if (res.status === 200) {
+                res = await res.json()
+                res = res.output_dir
+
+                setSetting("diskPath", res)
+            }
+        }
+    } catch (e) {
+        console.log('error fetching output dir path', e)
+    }
+}
+
+async function getDevices() {
+    try {
+        let res = await fetch('/get/devices')
+        if (res.status === 200) {
+            res = await res.json()
+
+            let allDeviceIds = Object.keys(res['all']).filter(d => d !== 'cpu')
+            let activeDeviceIds = Object.keys(res['active']).filter(d => d !== 'cpu')
+
+            if (activeDeviceIds.length === 0) {
+                useCPUField.checked = true
+            }
+
+            if (allDeviceIds.length < MIN_GPUS_TO_SHOW_SELECTION || useCPUField.checked) {
+                let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
+                gpuSettingEntry.style.display = 'none'
+                let autoPickGPUSettingEntry = getParameterSettingsEntry('auto_pick_gpus')
+                autoPickGPUSettingEntry.style.display = 'none'
+            }
+
+            if (allDeviceIds.length === 0) {
+                useCPUField.checked = true
+                useCPUField.disabled = true // no compatible GPUs, so make the CPU mandatory
+            }
+
+            autoPickGPUsField.checked = (res['config'] === 'auto')
+
+            useGPUsField.innerHTML = ''
+            allDeviceIds.forEach(device => {
+                let deviceName = res['all'][device]['name']
+                let deviceOption = `<option value="${device}">${deviceName} (${device})</option>`
+                useGPUsField.insertAdjacentHTML('beforeend', deviceOption)
+            })
+
+            if (autoPickGPUsField.checked) {
+                let gpuSettingEntry = getParameterSettingsEntry('use_gpus')
+                gpuSettingEntry.style.display = 'none'
+            } else {
+                $('#use_gpus').val(activeDeviceIds)
+            }
+        }
+    } catch (e) {
+        console.log('error fetching devices', e)
+    }
+}
+
+saveSettingsBtn.addEventListener('click', function() {
+	let updateBranch = (useBetaChannelField.checked ? 'beta' : 'main')
+
+	changeAppConfig({
+        'render_devices': getCurrentRenderDeviceSelection(),
+		'update_branch': updateBranch
+    })
+})
diff --git a/ui/server.py b/ui/server.py
index 7ad1d63e..9c80ea81 100644
--- a/ui/server.py
+++ b/ui/server.py
@@ -162,9 +162,13 @@ async def setAppConfig(req : SetAppConfigRequest):
     if req.update_branch:
         config['update_branch'] = req.update_branch
     if req.render_devices:
-        update_render_threads_from_request(req.render_devices)
+        update_render_devices_in_config(config, req.render_devices)
     try:
         setConfig(config)
+
+        if req.render_devices:
+            update_render_threads()
+
         return JSONResponse({'status': 'OK'}, headers=NOCACHE_HEADERS)
     except Exception as e:
         print(traceback.format_exc())
@@ -278,26 +282,14 @@ def save_model_to_config(ckpt_model_name, vae_model_name):
 
     setConfig(config)
 
-def save_render_devices_to_config(render_devices):
-    config = getConfig()
-    if 'render_devices' not in config:
-        config['render_devices'] = {}
+def update_render_devices_in_config(config, render_devices):
+    if render_devices not in ('cpu', 'auto') and not render_devices.startswith('cuda:'):
+        raise HTTPException(status_code=400, detail=f'Invalid render device requested: {render_devices}')
+
+    if render_devices.startswith('cuda:'):
+        render_devices = render_devices.split(',')
 
     config['render_devices'] = render_devices
-    if render_devices is None or len(render_devices) == 0:
-        del config['render_devices']
-
-    setConfig(config)
-
-def update_render_threads_from_request(render_device):
-    if render_device not in ('cpu', 'auto') and not render_device.startswith('cuda:'):
-        raise HTTPException(status_code=400, detail=f'Invalid render device requested: {render_device}')
-
-    if render_device.startswith('cuda:'):
-        render_device = render_device.split(',')
-
-    save_render_devices_to_config(render_device)
-    update_render_threads()
 
 @app.post('/render')
 def render(req : task_manager.ImageRequest):