HELP! choppy Video playback in Premiere Pro (22.1.2) on my P.C but not on my Macbook pro

Hello everyone, 

So i'm trying to edit a 1080x1920 Portrait video on my more than capable P.C (Intel core i7,16 GB ram, Nivia Geforce RTX 2070 super) but the video playback in my project on my P.C is choppy. I did everything the "How to fix choppy playback in Premiere Pro" Video recommended but on my P.C its still choppy. When i export it playsback smooth on the regular video player. 

So i decited to transfier my project to my Macbook pro (2016, Intel Core i5, 8GB ram) and it playsback smooth on Premiere Pro. I would finish the editing on my mac but its pretty slow. Any suggestions ?