Ever since i upgraded from 1.2.2, 'm having some performance issues. For instance, some MAME and N64 games (like Doom 64 during it’s intro) lag horribly with stutter in the sound, etc. The only way to fix it is to disable hard GPU sync, but this introduces input lag. These games never had issues on 1.2.2, however, even with GPU sync on.
There’s also another way to fix the lag, temporarily. If i press Alt-Tab and the focus isn’t on the main window, the games run smooth. When i return the focus to the main window, it stays smooth for a few seconds and then starts lagging again. CPU usage is below 30-40% by the way.
I thought it was a frame throttle issue and fixed it temporarily using different options there, but now throttling doesn’t do anything.
So maybe this is a Vsync Issue?