I haven't had this happen to me until recently. After playing through Betrayal, I tried playing through Domination with the BW mod for UT3. I started noticing the problem when I played the first map. Knowing that Domination is also a mod for UT3 and having Relic Madness activated in a different game type, I tried completely deactivating the Relic Madness mod and the results I got were excellent.
However, after trying to play Greed on Hydrosis with the BW, I ran into the same problem again. The game would experience massive lag (I'm playing offline, by the way), freeze momentarily, and would just be slow in general.
I have a gaming PC that should run the game with no issues:
-MS Windows XP Home 32-bit SP3
-Intel Core 2 Quad Q8200 @ 2.33GHz; Yorkfield 45nm Technology
-2.0GB Single-Channel DDR2 @ 333MHz 5-5-5-15
-Intel Corporation DG31PR (J3E1) [Motherboard]
-V223W @ 1024x768; 512MB GeForce 9800 GT (EVGA)
-312.57GB Western Digital WDC WD3201ABYS-01B9A0 (IDE) [Hard drive]
Any help on this matter (if there is any) is greatly appreciated. I know this mod is no longer worked on, but hey. Couldn't hurt to ask, right?
Also, I apologize if this is in the wrong spot. D:
