SSE Skyrim SE BSA's Corrupted?

[Gorgopis]

All of our BSA NPC textures are now dirty, grey, ugly, and lo-res. All of the NIF's path to these textures.

 

They all changed somewhere between 12/2020 and 4/2021.

 

Also, when we build custom textures and nifs, relying on NIF's and Textures from backed up MODs for NPC mods, the SSE Creation Kit will not path these.

 

What happened?

 

Thanks if anyone has any ideas.