huge performance drop since update to Premiere 2022

Hi all, I recently upgraded to v22.0 (2022) and working on my timelines has became really slow and studdering. I feels like back in the days when I was working with a slow computer where the sound is running on but pictures drop and lag a lot when playing back the timeline. Editing is super painful and slow like that.

I was suprprised and also installed the former version v15.4.1 (2021) again. In this version everything is still running as smoothyl as I remember. I am working on 4K 10bit Footage without proxies but my computer is set up to handle that. I have a i7-9700K 3.60GHz with 64 GB RAM and a Geforce RTX 2060 Super. Like I wrote in 15.4.1 it works very smoothly but in v22.0 it's really not useable at all. I payed a lot of money for the hardware in order to be able to edit 4K 10bit directly without proxies for professional work.

I have to stay with 15.4.1 or hope for an update with a fix. Anybody having the same issues?