Flickering shadow when camera is close to the ground

Hey, I’ve been trying to find a solution to a lighting problem for a few days now. My objects are flickering only on certain assets, particularly on surfaces parallel to the ground. The problem only appears from two camera angles and at a certain distance from the ground. If I switch to single-lit, the flickering is not visible, so it must be caused by the lighting. If I switch my directional light to static, the problem disappears, so it must be caused by the dynamic light. A very strange change is that if I remove the cast shadow from my asset, it no longer casts shadows, but the flickering still appears, which is weird since it seems to be a self-shadowing issue. I know it’s probably due to shadows with a bad setting, but I can’t find any solutions or anyone else who has experienced this problem in such a pronounced way. If you have any ideas or suggestions, it would be a great help.

Progress update:

I tried deleting my directional light and creating a new one with the default settings, which solved the problem. I know for sure that this is where the problem comes from a wrong setting.

The setting was one of them:

I hope I have been of assistance. I spent three days searching for the source of the problem.

Probably contact shadows if I had to guess, they should be very limited in length for most use cases.