Feel free to keep using this thread after my question has been answered, I made the title intentionally broad.
I just upgraded my ATI drivers to Catalyst 5.9, but now all the video I play appears abnormally grainy when maximized and the subtitles look terrible. I was using the standard collection of updated codecs, and even switched to a rencent version of the CCCP codec set, but it didn't help anything. If anyone has experienced this problem or knows a way to fix it without rolling back my video drivers or buying an NVidia card, that would be a lot of help.
EDIT: Nevermind, as usual, the tried and true method of solving everything worked, the reboot.
Since I can't seem to figure out how to delete this thread, I'll just leave it open or let a mod take care of it.