Is this a modular mesh duplicated many times, or one big mesh?
A few of your captures look like Lumen Final Gather / denoising. We could disable Lumen entirely to narrow in on the issue. If it was Lumen, that’s where I’d make sure you’re using modular meshes that have good distance fields. There are several View Modes that can help debug Lumen issues.
However, most of your captures look like AA problems. You do have a lot of sharp edges close together, which will emphasize TSR problems. You might be able to minimize it by increasing the resolution or screen percentage. Nanite, TSR, Lumen, and Virtual Shadow Maps all play nicely together, so you might try having all those on at the same time.