So I went back to my post (it was on a different account) and I just found out a new replay was there by @ValkTuna 15 days ago (my post is +7 months old) and the replay was:
Blockquote
just change Fallback Relative Error to 0 (default is 1) under the static mesh nanite settings and it’ll go away.
I had a similar issue, and that fixed it for me. Thanks to this video:
https://youtu.be/dOomTB1UxpI?si=ndw9Dzp0VuXMGy6F
Hope this helps someone else.
I’ve just tested this option and it did fix my issue but only in the StaticMesh menu, not in the scene (I need to look into it more). I hope this help you.