== SOLUTION ==

The current driver situation of nVidia sucks. Hotfix driver 576.26 fixed all problems.

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I am using a recent Ryzen and a 5070 Ti and Metro 2033 does not work in any usable way, whatever I try.

The game does not launch at all, it crashes every time before entering the menu.
- Solution: force windowed mode via ini

The game starts now, but freezes during the intro.
- Solution: delete intro movies, replace with empty files

Now the game launches well, sometimes. Sometimes though, it is extremely slow and laggy - UNLESS you have a different window (like the task manager) in the foreground. Then it runs smoothly, but as soon as you focus the game: 0.5-1 fps.
- Solution: Hoping for good luck, restarting

Now
it finally runs. Yay!

But it runs extremely slow, maybe around 20 FPS.
- It's PhysX and the new 5xxx gen! - nope, I turned it off, no change
- It's DX11 Tesselation! - nope, turning it off changes nothing.
- It's SSAA! - nope, turning it off changes nothing.
- It's my specs! - nope, Cyberpunk runs in 4K path tracing and Metro keeps 20 gps even on low settings.

....so.... No fullscreen, random slowdowns and unplayably bad framerates.
Any more ideas how to fix the game?