Visual artifacts in hideout when NOT upscaling

I recently got a 5090 and 4k monitor and noticed in my obnoxious hideout that there are horrible black squares all over unless I use upscaling.

https://www.youtube.com/watch?v=6Q-ihu7bmhM

- I have the latest drivers
- I tried all renderers and settings, the only thing that helps this is upscaling
- My nvidia/pc settings are pretty standard
- I'm on windows 11 home, I have an i9 285k
- I spent a bunch of money on stupid hideout effects and stupider GPUs so I'd like if this worked