The problem with textures of TF2 characters and lighting

Good day. Recently faced with such a problem: in Garry’s Mod TF2 characters are … lackluster, and normal lighting missing (even bloom does not help). Initially, I tried to solve the problem by myself. I downloaded the video drivers for newer, deleted all addons from Garry’s Mod. However, this did not solve the problem. Everything looks lackluster so far and sadly this is not a pleasure to work (I mean posing). If any of you know how to solve this problem, please speak up. (For example, I show 3 pictures thats shows texutres of Heavy and Spy and awful lighting, as shown on TwoFort. And on the other three pictures shows how lighting and texures of TF2 characters usually are at all.)

Theres album with examples :