&gt; I actually don&#x27;t care too much about getting WebGL out of the main UI thread. I&#x27;m doing WebVR work,<p>Halt and Catch Fire.  That&#x27;s a direct contradiction.  If you&#x27;re doing work on WebVR you should absolutely care about WebGL in workers. See: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=XvoBR9K3ZmE" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=XvoBR9K3ZmE</a><p>Consider running physics in separate thread, rendering in a thread, and sampling from the VR positional sensor and HMD in the main thread.  GC pauses in one thread should not affect other threads.