What mods shouldn't be packed into bsa?

[SeraVerte]

I used Cathedral Assets Optimizer on my entire mods folder today and now the game crashes when I try to load a save file.

I've read that certain mods llike those with audio and animations shouldn't be packaged as BSA. What other mods shouldn't be packed?

[agerweb]

Music certainly doesn't like being in a bsa and I find it more reliable to keep Voice files as loose files as well.

[sattyre]

Facetints from NPC overhauls if you use multiple NPC overhauls unless your can load them in the proper sequence. Wrong sequence = black faces.

Loose files will always overwrite the same files in a .bsa, so I don't have npc overhauls in .bsa files

Using CAO on your entire mod folder in one go is a recipe for frustration. If something breaks in your 50, 100, or 200 or more mod list it is a slow and cumbersome exercise to find it. I would say never do more then 10 or 20 mods at a time.