diff --git a/ui/component/fileRenderInline/view.jsx b/ui/component/fileRenderInline/view.jsx
index 79fe323ac..ca11075a1 100644
--- a/ui/component/fileRenderInline/view.jsx
+++ b/ui/component/fileRenderInline/view.jsx
@@ -2,6 +2,7 @@
 import React, { useState, useEffect } from 'react';
 import FileRender from 'component/fileRender';
 import LoadingScreen from 'component/common/loading-screen';
+import { NON_STREAM_MODES } from 'constants/file_render_modes';
 
 type Props = {
   isPlaying: boolean,
@@ -14,9 +15,18 @@ type Props = {
 };
 
 export default function FileRenderInline(props: Props) {
-  const { isPlaying, fileInfo, uri, streamingUrl, triggerAnalyticsView, claimRewards } = props;
+  const { isPlaying, fileInfo, uri, streamingUrl, triggerAnalyticsView, claimRewards, renderMode } = props;
   const [playTime, setPlayTime] = useState();
-  const isReadyToPlay = streamingUrl || (fileInfo && fileInfo.completed);
+  const isReadyToView = fileInfo && fileInfo.completed;
+  const isReadyToPlay = streamingUrl || isReadyToView;
+
+  // Render if any source is ready
+  let renderContent = isReadyToPlay;
+
+  // Force non-streaming content to wait for download
+  if (NON_STREAM_MODES.includes(renderMode)) {
+    renderContent = isReadyToView;
+  }
 
   useEffect(() => {
     if (isPlaying) {
@@ -39,5 +49,5 @@ export default function FileRenderInline(props: Props) {
     return null;
   }
 
-  return isReadyToPlay ? <FileRender uri={uri} /> : <LoadingScreen status={__('Preparing your content')} />;
+  return renderContent ? <FileRender uri={uri} /> : <LoadingScreen status={__('Preparing your content')} />;
 }
diff --git a/ui/component/viewers/threeViewer/index.jsx b/ui/component/viewers/threeViewer/index.jsx
index e698e8136..64dae60dd 100644
--- a/ui/component/viewers/threeViewer/index.jsx
+++ b/ui/component/viewers/threeViewer/index.jsx
@@ -1,7 +1,6 @@
 // @flow
 import * as React from 'react';
 import * as dat from 'dat.gui';
-import classNames from 'classnames';
 import LoadingScreen from 'component/common/loading-screen';
 
 // ThreeJS
@@ -52,14 +51,13 @@ const ThreeLoader = ({ fileType = null, downloadPath = null }, renderModel, mana
 };
 
 type viewerTheme = {
-  gridColor: string,
-  groundColor: string,
-  backgroundColor: string,
-  centerLineColor: string,
+  showFog: boolean,
+  gridColor: number,
+  backgroundColor: number,
+  centerLineColor: number,
 };
 
 type Props = {
-  theme: string,
   source: {
     fileType: string,
     downloadPath: string,
@@ -131,26 +129,15 @@ class ThreeViewer extends React.PureComponent<Props, State> {
 
   constructor(props: Props) {
     super(props);
-    const { theme } = this.props;
     // Object defualt color
-    this.materialColor = '#44b098';
-    // Viewer themes
-    this.themes = {
-      dark: {
-        gridColor: '#414e5c',
-        groundColor: '#13233C',
-        backgroundColor: '#13233C',
-        centerLineColor: '#7f8c8d',
-      },
-      light: {
-        gridColor: '#7f8c8d',
-        groundColor: '#DDD',
-        backgroundColor: '#EEE',
-        centerLineColor: '#2F2F2F',
-      },
+    this.materialColor = 0xffffff;
+    // Default viewer Theme
+    this.theme = {
+      showFog: true,
+      gridColor: 0x414e5c,
+      centerLineColor: 0x7f8c8d,
+      backgroundColor: 0x0b0c0d,
     };
-    // Select current theme
-    this.theme = this.themes[theme] || this.themes.light;
     // State
     this.state = {
       error: null,
@@ -212,29 +199,27 @@ class ThreeViewer extends React.PureComponent<Props, State> {
       });
       // Clean up controls
       if (this.controls) this.controls.dispose();
-      // It's unclear if we need this:
+      // Clean up scene
+      if (this.scene) this.scene.dispose();
+
       if (this.renderer) {
+        this.renderer.context = null;
+        this.renderer.domElement = null;
         this.renderer.renderLists.dispose();
+        this.renderer.forceContextLoss();
         this.renderer.dispose();
+        this.renderer = null;
       }
       // Stop animation
       cancelAnimationFrame(this.frameID);
       // Destroy GUI Controls
       if (this.gui) this.gui.destroy();
-      // Empty objects
-      this.grid = null;
-      this.mesh = null;
-      this.renderer = null;
-      this.material = null;
-      this.geometry = null;
-      this.bufferGeometry = null;
     }
   }
 
   // Define component types
   theme: viewerTheme;
-  themes: { dark: viewerTheme, light: viewerTheme };
-  materialColor: string;
+  materialColor: number;
   // Refs
   viewer: ?HTMLElement;
   guiContainer: ?HTMLElement;
@@ -265,10 +250,10 @@ class ThreeViewer extends React.PureComponent<Props, State> {
 
   transformGroup(group: any) {
     ThreeViewer.fitMeshToCamera(group);
-
     if (!this.targetCenter) {
       const box = new Box3();
-      this.targetCenter = box.setFromObject(this.mesh).getCenter();
+      const center = new Vector3();
+      this.targetCenter = box.setFromObject(this.mesh).getCenter(center);
     }
     this.updateControlsTarget(this.targetCenter);
   }
@@ -452,10 +437,7 @@ class ThreeViewer extends React.PureComponent<Props, State> {
       gammaCorrection: true,
     });
 
-    this.scene = ThreeScene({
-      showFog: true,
-      ...this.theme,
-    });
+    this.scene = ThreeScene(this.theme);
 
     const canvas = this.renderer.domElement;
     const { offsetWidth: width, offsetHeight: height } = this.viewer || {};
@@ -473,7 +455,7 @@ class ThreeViewer extends React.PureComponent<Props, State> {
     // Set viewer size
     this.renderer.setSize(width, height);
 
-    // Create model material
+    // Create material
     this.material = new MeshPhongMaterial({
       depthWrite: true,
       flatShading: true,
@@ -501,26 +483,21 @@ class ThreeViewer extends React.PureComponent<Props, State> {
   }
 
   render() {
-    const { theme } = this.props;
     const { error, isReady, isLoading } = this.state;
     const loadingMessage = __('Loading 3D model.');
-    const showViewer = isReady && !error;
-    const showLoading = isLoading && !error;
-
-    // Adaptive theme for gui controls
-    const containerClass = classNames('gui-container', { light: theme === 'light' });
+    const showLoading = isLoading && !error && !isReady;
+    const containerClass = 'gui-container';
 
     return (
-      <React.Fragment>
-        {error && <LoadingScreen status={error} spinner={false} />}
-        {showLoading && <LoadingScreen status={loadingMessage} spinner />}
-        <div ref={element => (this.guiContainer = element)} className={containerClass} />
-        <div
-          style={{ opacity: showViewer ? 1 : 0 }}
-          className="three-viewer file-render__viewer"
-          ref={viewer => (this.viewer = viewer)}
-        />
-      </React.Fragment>
+      <>
+        <div className="file-render__viewer file-render__viewer--three">
+          <div ref={element => (this.guiContainer = element)} className={containerClass} />
+          <div className="three-viewer" ref={viewer => (this.viewer = viewer)}>
+            {error && <LoadingScreen status={error} spinner={false} />}
+            {showLoading && <LoadingScreen status={loadingMessage} spinner />}
+          </div>
+        </div>
+      </>
     );
   }
 }
diff --git a/ui/component/viewers/threeViewer/internal/scene.js b/ui/component/viewers/threeViewer/internal/scene.js
index 40979f8f3..886217f67 100644
--- a/ui/component/viewers/threeViewer/internal/scene.js
+++ b/ui/component/viewers/threeViewer/internal/scene.js
@@ -21,17 +21,18 @@ const addLights = (scene, color, groundColor) => {
   scene.add(shadowLight);
 };
 
-const ViewerScene = ({ backgroundColor, groundColor, showFog }) => {
-  // Convert color
-  const bgColor = new Color(backgroundColor);
+const ViewerScene = ({ backgroundColor, showFog }) => {
   // New scene
+  const bg = new Color(backgroundColor);
   const scene = new Scene();
-  // Background color
-  scene.background = bgColor;
-  // Fog effect
-  scene.fog = showFog === true ? new Fog(bgColor, 1, 95) : null;
+  // Transparent background
+  scene.background = bg;
+  // Add fog
+  if (showFog) {
+    scene.fog = new Fog(bg, 1, 54);
+  }
   // Add basic lights
-  addLights(scene, '#FFFFFF', groundColor);
+  addLights(scene, 0xffffff, bg);
   // Return new three scene
   return scene;
 };
diff --git a/ui/constants/file_render_modes.js b/ui/constants/file_render_modes.js
index 6736416bf..fc1f71481 100644
--- a/ui/constants/file_render_modes.js
+++ b/ui/constants/file_render_modes.js
@@ -16,7 +16,10 @@ export const IMAGE = 'image';
 export const CAD = 'cad';
 export const COMIC = 'comic';
 
-export const AUTO_RENDER_MODES = [IMAGE, CAD, COMIC].concat(TEXT_MODES); // these types will render (and thus download) automatically (if free)
+// These types can only be render if download completed
+export const NON_STREAM_MODES = [CAD, COMIC];
+
+export const AUTO_RENDER_MODES = [IMAGE].concat(TEXT_MODES);
 export const WEB_SHAREABLE_MODES = AUTO_RENDER_MODES.concat(FLOATING_MODES);
 
 export const DOWNLOAD = 'download';
@@ -25,7 +28,7 @@ export const UNSUPPORTED = 'unsupported';
 
 // PDFs disabled on desktop until we update Electron: https://github.com/electron/electron/issues/12337
 // Comics disabled because nothing is actually reporting as a comic type
-export const UNSUPPORTED_IN_THIS_APP = IS_WEB ? [CAD, COMIC, APPLICATION] : [CAD, APPLICATION, PDF];
+export const UNSUPPORTED_IN_THIS_APP = IS_WEB ? [CAD, COMIC, APPLICATION] : [APPLICATION, PDF];
 
 export const UNRENDERABLE_MODES = Array.from(
   new Set(UNSUPPORTED_IN_THIS_APP.concat([DOWNLOAD, APPLICATION, UNSUPPORTED]))
diff --git a/ui/scss/component/_dat-gui.scss b/ui/scss/component/_dat-gui.scss
index 557a54e99..6ce94a903 100644
--- a/ui/scss/component/_dat-gui.scss
+++ b/ui/scss/component/_dat-gui.scss
@@ -3,101 +3,26 @@
 .gui-container {
   top: 0;
   right: 0;
-
   position: absolute;
-  z-index: 2;
 
   .dg.main {
     margin: 0;
     padding: 0;
     overflow: inherit;
-  }
 
-  // Light theme:
-  // https://github.com/liabru/dat-gui-light-theme
-
-  &.light {
-    .dg.main.taller-than-window .close-button {
-      border-top: 1px solid #ddd;
+    li {
+      margin: 0;
     }
 
-    .dg.main .close-button {
-      &:not(:hover) {
-        background-color: #e8e8e8;
-      }
-
-      &:hover {
-        background-color: #ddd;
-      }
+    input {
+      height: initial;
     }
 
-    .dg {
-      color: #555;
-      text-shadow: none !important;
-
-      &.main {
-        &::-webkit-scrollbar {
-          background-color: #fafafa;
-        }
-
-        &::-webkit-scrollbar-thumb {
-          background-color: #bbb;
-        }
-      }
-
-      li {
-        &:not(.folder) {
-          background-color: #fafafa;
-          border-bottom: 1px solid #ddd;
-        }
-
-        &.save-row .button {
-          text-shadow: none !important;
-        }
-
-        &.title {
-          background: #e8e8e8
-            url('data:image/gif;base64,R0lGODlhBQAFAJEAAP////Pz8////////yH5BAEAAAIALAAAAAAFAAUAAAIIlI+hKgFxoCgAOw==')
-            6px 10px no-repeat;
-        }
-      }
-
-      .cr {
-        &.function:hover,
-        &.boolean:hover {
-          background-color: white;
-        }
-      }
-
-      .c {
-        input {
-          &[type='text'] {
-            &:not(:focus),
-            &:not(:hover) {
-              background-color: #e9e9e9;
-            }
-
-            &:focus,
-            &:hover {
-              background-color: #eee;
-            }
-
-            &:focus {
-              color: #555;
-            }
-          }
-        }
-
-        .slider {
-          &:not(:hover) {
-            background-color: #e9e9e9;
-          }
-
-          &:hover {
-            background-color: #eee;
-          }
-        }
-      }
+    input[type='checkbox'] {
+      height: 12px;
+      width: 12px;
+      padding: 0;
+      margin: 0;
     }
   }
 }
diff --git a/ui/scss/component/_file-render.scss b/ui/scss/component/_file-render.scss
index 1f5894b30..111e781aa 100644
--- a/ui/scss/component/_file-render.scss
+++ b/ui/scss/component/_file-render.scss
@@ -119,6 +119,15 @@
   }
 }
 
+.file-render__viewer--three {
+  position: relative;
+  overflow: hidden;
+
+  .three-viewer {
+    height: calc(100vh - var(--header-height) - var(--spacing-medium) * 2);
+  }
+}
+
 .file-render__content {
   width: 100%;
   height: 100%;