I bought a collection of models that all came in a single model file (bad form already, I know). So I started working on splitting the models into each of their own files. This is when I notice that when in textured view, there is some weird z-fighting going on.
To narrow it down, I selected a single face in part of a model, then selected connected with sharp edges as a separator, so I only got part of the model (which is shown in the video). I turned on x-ray to select a face to verify that I'm only selecting a single face, thinking that there may be duplicate meshes on top of each other. Nothing. I did a point merge with a very small radius, but nothing merged. I'm convinced that the mesh itself is not fighting with a copy.
Since it only happens in textured view mode, I cleared the material and created a new BSDF shader with no textures attached to it, which is what you see in the video. So it seems to rule out the shading.
I can't figure out what is causing this. Any ideas?
Video showing the issue: https://youtu.be/PBJmexufsz8