for some reason my computer can't handle Skyrim with graphic mods. I used Texture Pack Combiner and no mods with textures greater than 2k resolution, plus an ENB with DOF only, and it still lags. However, I can run other games such as Bioshock Infinite on ultra with 0 lag whatsoever. I actually used to be able to use tons of 4k mods and I was fine, but for some reason my computer just seems to have given up and can't handle it anymore. Any ideas to what could be causing this? Here are my specs: