Idk why i have this bug in the ogversion of the game my mob are like x3 speed ..

Can someone help me, I had problems with the game before with a white screen. The problem is fixed but that moreover I don't know what to do

Are you using a 120Hz+ monitor? The game's engine struggles when the refresh rate is too high, and objects (such as mobs, saws and lasers) speed up to match the monitors refresh rate.

This makes some hell levels borderline impossible and could also be the source of your particular problem. If that's the case, just set your monitor's refresh rate to 60Hz whenever you play the game.