Comment

Comment by mostlysimilar

I believe this is related to using scaled resolution in macOS.

https://bugzilla.mozilla.org/show_bug.cgi?id=1404042

I was able to achieve way better performance by changing this to `true` in `about:config`:

  gfx.compositor.glcontext.opaque
Another note, performance seems way better when changing the following to `true`:

  gfx.webrender.all
  gfx.webrender.enabled
If anyone with deeper understanding of these options has any reasons why this is a bad idea I'm all ears. Otherwise it's made my experience way better.

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