Not 100% sure, but as far as I remember (and I've dealt with this myself) - MIPMAP generation in interface textures is EVIL and can mess things up quite badly when changing graphics settings from high to low, etc.
Well done! Everything looks really great, I know a ton of work was put into this (Respect and Props 🫡).
Hi, thanks for the support!
Yes, mipmaps on textures not related to the world itself and models aren't needed — I re-saved many of them without that checkbox, but probably not all. I'll work on making sure they're not on the files at all.