Volume buttons affects the composition for some fps

Steps causing the bug to occur

Just wanted to know if this is a known bug. Could be related to my GPU only.

  1. Open a composition with some motion.
  2. Size the composition window up (easier to notice).
  3. Use the Keyboard volume buttons.
  4. Notice some fps where the composition jiggles (for < 1 sec).

Could try to submit a screencast if needed.

Computer specs below.

Have you found a workaround?

Other notes

  • Vuo version: 1.2.1
  • macOS version: macOS
  • How severely does this bug affect you? Not much; I’m just letting you know about it.


When you press the volume buttons, an overlay appears on the screen. In Mac OS 10.9 and prior, that overlay is a simple semitransparent window. In Mac OS 10.10 and later, the system renders a complicated blur filter. So, most likely your GPU is struggling to render everything at the same time.

Other than generally working toward making Vuo’s graphics rendering more efficient, I don’t think there’s anything we can do about that.

A possible workaround would be to go to System Preferences > Accessibility > Display and enable “Reduce transparency”, which switches the overlay to something more like 10.9 and prior.

@jstrecker ok sounds logic. Thanks.