After installing 1.8.3, the game (KOTOR collection version) became very slow. The main menu takes a while just to appear and the cursor is extremely slow to respond. If I go to the options menu, the game suddenly runs much smoother, but it takes forever to load the character creation menu and things don't improve from there.
I had a fresh installation of the game before adding TSLRCM and then reinstalled KOTOR2 and tried again with no change. The only other mod I had installed was the most recent version of M4-78EP, and uninstalling that doesn't fix the problem. I've tried lowering the graphics settings and resolution, but that only made a marginal improvement.
My laptop isn't exactly ideal for gaming, so I fear that might be the problem, but it's good enough to run the vanilla game on medium settings without too many problems.
Relevant specs:
Windows Vista
Mobile AMD Sempron 3600+, 2 Ghz, single core
2 gigs of RAM
ATI Radeon Express 1150
Is there anything I can do?
Edit: Forgot to mention that using windowed mode makes absolutely no difference.