Earlier this year I had a months long issue where my desktop image would freeze if I set its refresh rate higher than 120. I thought my GPU was breaking up, but I finally found a post on the Nvidia forum where someone else had the same issue and realized that it was because of the newest driver. It took months for Nvidia to fix that. Two months ago I just decided to switch to AMD and sold my Nvidia card and haven't had any issues with AMD so far.

reinstall the OS cause OpenSUSE stopped booting

Just do a snapper rollback. It's pretty easy:

1. Boot from older kernel in the boot menu and check if it works
2. Run sudo snapper rollback
3. Reboot

Boom, saved you a reinstall.

Alternatively, you can set up zypper to keep old NVIDIA packages, then just login to a CLI and install the older driver package, then reboot. I did that a few times as well, but the snapper rollback was easier.

X11 is ALSO buggy

I didn't have any of those issues for the 3-ish years I was on Tumbleweed and NVIDIA. I'm now still on Tumbleweed, but have switched to AMD for proper Wayland support

Nvidia is the best for Windows. But, if you want the best on Linux and Windows Amd is good

I guess mileage might differ. I installed Tumbleweed and then the Nvidia drivers following the wiki instructions. Everything is going great. Running a 3060 with Wayland+Plasma on a 360Hz screen and gaming through Steam. I love Tumbleweed.

An alternative if just for benchmarking is EndeavourOS, you can choose proprietary Nvidia drivers as a boot option in the installer and then I believe it'll be installed with them without further ado. Downside is if you use it long term you have to read Arch News before updates to spot breaking/incompatible changes and be knowledagable of things like pacnew/pacsave files, etc.