4096x4096 textures are missing in gmod

http://orig11.deviantart.net/29a3/f/2016/079/6/c/missing_normal_map_by_rjqnraos19-d9vr3l4.jpg

As you can see, the 4096x4096 normal map texture working well in hl2 hlmv.
but in Gmod… ugh…
Is gmod not support 4096x4096 textures?
or how can I fix them?
sorry for my bad english.

Out of curiosity, for what reason would you need 4096x4096 texutres on a model?

Nude models

Anyway, rescale the normal map to 1024x1024. 4096 is too big for normal

http://orig05.deviantart.net/552e/f/2016/079/c/0/2048_by_rjqnraos19-d9vrkei.jpg

2048x2048

check the texture quality options and the console parameters for the texture lod setup and maybe force lod and anisotropic filtering whether by setting the proper file flags or the engine’s rendering options.