I didn't make it!
I use disk compression for several reasons. Reading AA files intensely I found that they indicate AA should NOT be a compressed file. I found also it is possible to have both comp/uncomp files on the same disk. Anyone with AA compressed may want to change that. Additionally, following the chain of thought, then if ones video drivers or Windows system files are compressed (mine were not), rethink that decision also. I believe I have noticed an improvement in game performance since the change.