Guys, If I implement this fix in my game, Will I need Yanfly's FPS Sync plugin? I using a basic 60hz 1080p monitor so I cant test my game with higher refresh rates.
FPS Synch has nothing to do with the problem. Personally, I highly recommend removing the FPS Synch plugin because it does nothing but cause problems.
Regardless, this plugin as stated here:
it's just overriding an error in the base core script of RPG Maker.
The solution is easy to implement and has very little overhead to it, so there is no reason not to implement it.
Give it a download and try it.