Unwanted shadows on objects - URP

[Alwngwen]

Hi everyone, I have this weird issue…
I used some free assets to create this map, and the character has a flashlight here, sometimes, some tiles cast this weird shadow from certain angles. Although I use the same material and tile, not all of them do this. I’ve tried turning off shadow casting on the material and changing the light type from spot to point, always some of the tiles do this. Even if I disable cast shadows from the light source, I get this. The only way I got to prevent this was to remove the floor objects’ layer from the culling mask. I’ve also tried soft shadows, hard shadows, different shadow res, and playing the clipping plane scroller. Nothing fixes this. I’d appreciate if someone could tell me what I’m doing wrong here.
Thanks for your time and info in advance and have a great one all!
(I’ve attached 3 different images of the weird shadows)

[mddsvr]

I might be wildly off-mark here, but if this line between floor pannels is the artefact you are talking about… It almost looks like mismatched normals to me - seems like they’re reacting to specular reflections rather than direct light.

As in, the mesh / texture normals from the right side of the first pannel don’t match with the normals of the left side of the second.
A quick way to check whether this is the problem, is to open the import settings for your floor mesh and to play around with the “Normals” options.