I found once I updated to 2.01 That my frame rate took a nose dive.
I'm using an intel & Nvidia combo.
What worked for me was to set the graphex to low settings, wait a few seconds, then turn them back to where I had them before. Works as intended again.

So Might be a quick fix if you have also had that problem after the patch.

Actually...all you need to do is delete usersettings.json. you should do this after every patch or update as graphics options change and keeping the old file leads to major conflicts.

Thanks for this, it sort of worked for me. The new custom option I think had overwritten my setting for DLSS super resolution and I'd obviously forgotten I had that set to at least balanced before the 2.1 update. Turning that back on got me back some performance.

Frame rate has definitely taken a hit with this update though. I'm on a 4090rtx and a 13700k so I've been playing this maxed out. I'd set a frame limit in my Nvidia settings to 115fps and was pretty consistently locked at that before the 2.1 update. Now it's getting between 95-100 consistently.

I've installed the latest nvidia drivers so I know it's not that.

Maybe there will be a quick follow-up patch that sorts any issues from this.