I found a Bug and heared a solution from a Streamer to temporarily fix it for me.
The Bug:
I play the new Firebird with Mirror Image, when I call them the game goes laggin out(massive fps drops). The streamer I asked said it’s coming from the sound. So I turned off my sound and the game was working normal again. Then I tried to experiment.
I found out I can play without lag when I turn the Sound Channel Quality to 16. Then I can play with sound without problems but if I go higher I get more lags…