Messed up models

Well I have been having this problem with models with a few servers I play which use the game modes Novus2 Severance and Half Life 2 Role play no I can’t seem to see the CWU models and some other Industry Models, And for Novus2 and Severance (Both use same models) I can’t see.

This all started happening when I deleted my gmod folder and reinstalled it the game ran faster etc and helped alot. But I started seeing errors as Models
Some with missing textures others with just being a really annoying ERROR.

If you need any more info just tell me.

I have CSS TF2 Portal Hl2 Hl2 Ep1 Hl2 Ep2 so that cant be the problem.