Is anyone else bothered by the flicker between the Pass and Undo buttons whenever either player clicks? It happens before the sound of the stones! The effect is like suddenly a bug or other distraction moves just off the field of view just as I am about to complete placing a stone.
I have quite narrow field of view, so if I’m watching at the board while playing I never encounter the problem you described.
As a suggestion, have you tried zen mode? It might help you tremendously on its own or in combination with F11(full screen mode).
If you want to have an artificial delay put in place for different length sound effects or to change UI, so overlap won’t happen then I can’t help you. I’m not a dev.
I don’t think it should “flicker”.
I don’t see anything like that - at the time of the click, the pass button disappears and the undo button appears.
What device, operating system, browser are you using?
Any other variations like “is it live or correspondence games, or all?”