When “Reduce Motion” option is enabled, the in-game menu options gets pixelated and shake for a bit when you’re switching between the tabs. This behavior doesn’t happen when “Reduce Motion” is disabled.
This is how it looks like when “Reduce Motion” is disabled:-
you’re right! canvasgroups are used for these large fade in / fade outs, and sometimes they hit memory limits. We’ve been tweaking the limits internally and you shouldn’t see this as much anymore.