diff --git a/AppApi.cs b/AppApi.cs
index 64f97fe8..cec86e42 100644
--- a/AppApi.cs
+++ b/AppApi.cs
@@ -54,6 +54,25 @@ namespace VRCX
             return fileData.Length.ToString();
         }
 
+        public string ReadConfigFile()
+        {
+            var logPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + @"Low\VRChat\VRChat\";
+            var configFile = Path.Combine(logPath, @"config.json");
+            if (!Directory.Exists(logPath) || !File.Exists(configFile))
+            {
+                return "";
+            }
+            var json = System.IO.File.ReadAllText(configFile);
+            return json;
+        }
+
+        public void WriteConfigFile(string json)
+        {
+            var logPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + @"Low\VRChat\VRChat\";
+            var configFile = Path.Combine(logPath, @"config.json");
+            System.IO.File.WriteAllText(configFile, json);
+        }
+
         public void ShowDevTools()
         {
             MainForm.Instance.Browser.ShowDevTools();
diff --git a/html/src/app.js b/html/src/app.js
index 85e3fbfd..780ac5c0 100644
--- a/html/src/app.js
+++ b/html/src/app.js
@@ -10905,6 +10905,83 @@ speechSynthesis.getVoices();
         this.userDialogLastActiveTab = obj.label;
     };
 
+    // VRChat Config JSON
+
+    $app.data.VRChatConfigFile = {};
+
+    $app.data.VRChatConfigList = {
+        cache_size: 'Max Cache Size in Gigabytes (minimum 20)',
+        cache_expiry_delay: 'Expire Cache in Days (minimum 30)',
+        dynamic_bone_max_affected_transform_count: 'Dynamic Bones Limit Max Transforms (0 disables all components)',
+        dynamic_bone_max_collider_check_count: 'Dynamic Bones Limit Max Collider Collisions (0 disables all components)'
+    };
+
+    $app.methods.ReadVRChatConfigFile = async function () {
+        this.VRChatConfigFile = {};
+        var config = await AppApi.ReadConfigFile();
+        if (config) {
+            this.VRChatConfigFile = JSON.parse(config);
+        }
+    };
+
+    $app.methods.WriteVRChatConfigFile = async function () {
+        var json = JSON.stringify(this.VRChatConfigFile, null, "\t");
+        AppApi.WriteConfigFile(json);
+    };
+
+
+    $app.data.VRChatConfigDialog = {
+        visible: false,
+        cameraRes: false,
+        screenshotRes: false
+    };
+
+    API.$on('LOGOUT', function () {
+        $app.VRChatConfigDialog.visible = false;
+    });
+
+    $app.methods.showVRChatConfig = async function () {
+        await this.ReadVRChatConfigFile();
+        this.$nextTick(() => adjustDialogZ(this.$refs.VRChatConfigDialog.$el));
+        this.VRChatConfigDialog = {
+            cameraRes: false,
+            screenshotRes: false,
+            visible: true
+        }
+        if ((this.VRChatConfigFile.camera_res_height === 2160) &&
+            (this.VRChatConfigFile.camera_res_width === 3840)) {
+            this.VRChatConfigDialog.cameraRes = true;
+        }
+        if ((this.VRChatConfigFile.screenshot_res_height === 2160) &&
+            (this.VRChatConfigFile.screenshot_res_width === 3840)) {
+            this.VRChatConfigDialog.screenshotRes = true;
+        }
+    };
+
+    $app.methods.SaveVRChatConfigFile = function () {
+        if (this.VRChatConfigDialog.cameraRes) {
+            this.VRChatConfigFile.camera_res_height = 2160;
+            this.VRChatConfigFile.camera_res_width = 3840;
+        } else {
+            delete this.VRChatConfigFile.camera_res_height;
+            delete this.VRChatConfigFile.camera_res_width;
+        }
+        if (this.VRChatConfigDialog.screenshotRes) {
+            this.VRChatConfigFile.screenshot_res_height = 2160;
+            this.VRChatConfigFile.screenshot_res_width = 3840;
+        } else {
+            delete this.VRChatConfigFile.screenshot_res_height;
+            delete this.VRChatConfigFile.screenshot_res_width;
+        }
+        for (var item in this.VRChatConfigFile) {
+            if (!this.VRChatConfigFile[item]) {
+                delete this.VRChatConfigFile[item];
+            }
+        }
+        this.VRChatConfigDialog.visible = false;
+        this.WriteVRChatConfigFile();
+    };
+
     $app = new Vue($app);
     window.$app = $app;
 }());
diff --git a/html/src/index.pug b/html/src/index.pug
index e50787f6..140218a0 100644
--- a/html/src/index.pug
+++ b/html/src/index.pug
@@ -866,6 +866,7 @@ html
                     div.options-container-item
                         el-button-group
                             el-button(size="small" icon="el-icon-s-operation" @click="showLaunchOptions()") Launch Options
+                            el-button(size="small" icon="el-icon-s-operation" @click="showVRChatConfig()") VRChat config.json
                 div.options-container(style="margin-top:45px;border-top:1px solid #eee;padding-top:30px")
                     span.header Legal Notice
                     div.options-container-item
@@ -1465,6 +1466,24 @@ html
                         el-button(size="small" @click="openExternalLink('https://docs.vrchat.com/docs/launch-options')") VRChat Docs
                         el-button(size="small" @click="openExternalLink('https://docs.unity3d.com/Manual/CommandLineArguments.html')") Unity Manual
                         el-button(type="primary" size="small" :disabled="launchOptionsDialog.loading" @click="updateLaunchOptions" style="margin-left:auto") OK
+                        
+            //- dialog: VRChat Config JSON
+            el-dialog.x-dialog(ref="VRChatConfigDialog" :visible.sync="VRChatConfigDialog.visible" title="VRChat Config JSON" width="420px")
+                div(style='font-size:12px;')
+                    | These options are for advanced users only. #[br]
+                    | Leave field empty to set as default.
+                br
+                div(style="display:inline-block" v-for="(name, value) in VRChatConfigList" :key="value")
+                    span(v-text="name" style="word-break:keep-all")
+                    |:
+                    el-input(v-model="VRChatConfigFile[value]" size="mini" style="margin-top:10px")
+                el-checkbox(v-model="VRChatConfigFile.disableRichPresence" style="margin-top:5px;display:block") Disable Discord Rich Presence
+                el-checkbox(v-model="VRChatConfigDialog.cameraRes" style="margin-top:5px") 4K Camera
+                el-checkbox(v-model="VRChatConfigDialog.screenshotRes" style="margin-top:5px") 4K Screenshots
+                template(#footer)
+                    el-button(size="small" @click="openExternalLink('https://docs.vrchat.com/docs/configuration-file')") VRChat Docs
+                    el-button(size="small" @click="VRChatConfigDialog.visible = false") Cancel
+                    el-button(type="primary" size="small" :disabled="VRChatConfigDialog.loading" @click="SaveVRChatConfigFile") Save
 
             //- dialog: launch
             el-dialog.x-dialog(ref="launchDialog" :visible.sync="launchDialog.visible" title="Launch" width="400px")