I fixed my lag finally, basically my problem was that my hdr would not really turn off. the way to tell if your hdr is still on is by seeing if your game was looking blurry at distances.
then someone told me to type bloom 0 in the console. that didnt do anything so i did bloom 1, and it turned off right that second, and the game looked awesome.
hope this helps someone. lag fixed, and blurriness fixed