Rope and fire Particles not working

I don’t know which update did it but for some reason the ropes on my maps have looked like this,

And lately fire became invisible, is anyone else having these problems or know how to fix it?
I will only clear my garrysmod folder as a (very)last result, and its not my graphics card being crap since its a 1GB 5750 which is decent.

Verify your G-Mod files and other games. It seems like a case of decaying data.