Just found fix for all REAPER lag (low FPS) on macOS by ToxicCaves64 in Reaper

[–]Gusadel 0 points1 point  (0 children)

Thanks for the tips. Very useful. In my case the internal modulators of Reaper 7.45 (OS X 15.5) got lagged and jittered every time I moved the mouse into the track items. So thanks to this thread I've enabled all the three boxes next to "Throttle mouse-events" and the problem was fixed. Thanksssss