Since installing Seasons, I've had a major slowdown/lag in the game, but worse, this is what happens within minutes of playing:

The neighborhood and buying clothes also get this look shortly after the sim will lose his face or skin.
I've pulled out the hacks I could find but suspect some are mixed in with the gazillion clothes , careers, walls, windows, floors, etc. Does this look like a video game card issue? I thought I saw a program that specifically identifies hacks that conflict, and if anyone knows who did that or where I could find it, I could try it out.
Thanks for any suggestions or help.