I have the following problem: When I want to record Minecraft and I go to full screen mode, my FPS are completely normal but when I look around there's a disgusting image error (parts of the image move very unnecessarily when looking up and down) recording it is not to be seen. (Specs: I7-10700F RX5700XT 16GBRam
Possibly check whether your drivers are up to date. Especially graphics drivers in the case.
I would be surprised if it's because of that, but who knows.
Otherwise try to load the PC less with the OBS encoder.
So set this lower for test purposes.
If the image defect is gone, you have put too much strain on the PC.
Of course, you can also lower the game settings until it fits, instead of OBS. Depending on how high quality something should be.
If you play with high fps, you can limit this, for example.
But of course there are more options.
So in good German it's best to burden the PC with whatever is significantly less. If that helps, you know what it was. If not, it'll be exciting.