Okay, this has never happened before. I used to be able to run the Sims 2 + all EPs on high graphic settings with barely any lag, but when I opened the game today, it was extremely choppy; the neighbourhood camera crawled like a snail, and I couldn't even enter the boolprop cheat without waiting a few seconds for each letter to load.
I have no clue what caused this, since nothing unusual happened to my computer. I tried lowering the graphic settings, but it made absolutely no difference. I turned off shaders (boolprop useshaders false) - no difference. I ran disk defrag and cleanup, closed background tasks, ran -w and -nosound mode but the game was still laggy like hell.
I ran dxdiag to check on my settings, and everything was the same as before. In a desperate last attempt, I deleted all the custom content I installed in the past 48 hours; still made no difference.
I'm just...stumped. :| I've got no idea why this happened, or how to fix it. Any help?