Holy crap, your advice fixed my problem! I have been searching for a solution to this for months! Thank you so much! 

Hi everyone, I have an odd problem. Whenever I try and play a zombie map that has the UGX mod, the frame rate will drop to about 15 fps once I load in, in addition to all of the textures warping and just generally flinching out. Whenever I try to alt tab, I get an unrecoverable DirectX error which c...