Render seems "torn"

[salemvipers]

Hi there!
I'm still pretty new to blender and therefore have the following problem:
I've rendered a model in 3.6.2, but somehow the rendered image seems torn, just like in an old film camera (see picture attached).
Render settings:
- Cycles CPU supported
- open shading language
- noise threshold 0.01, 250 samples
- denoise OpenImage, Albedo and Normal, accurate
- tile size 250

Things that didn't work getting rid of the shear:
- rotating the HDR
- rendering again

I'd be the happiest, if someone could help!!

PS: if you've got some time: i'm open for suggestions for more realism...

Thanks in advance!!!