Game not load models and brushes.

Sometimes if I first join any server then I get a weird bug that I see no brushes and models.
Need to rejoin to the server to solve this bug. I cant understand what the hell is causing this.
I reinstalled the game many times verified cache anything. Checked other versions of Gmod in Beta.
Nothing. Not often happens but if it happens then really annoying. If you check like Combine Destiny HL2 mod maps it can happen. Not all maps do this.