Numos wrote...
I'm able to run Skyrim and WoW just fine. I tried reinstalling and vanilla NWN seemed to work just fine too. Once I installed HoTU and ran the 1.69 critical rebuild I ran into trouble, though running the 1.68 critical rebuild... reversed the issue?
Too bad you can't swap out the ATi card just a moment to test it.
I also run an ATI, though it is very low-end, dying and not installed on a mobile rig, with some of the same type graphic anomalies you have described. Much of CEP is virtually unplayable for me visually which is why I suggested that your card may have degraded just enough that you may be experiencing the effects. Component lifespans will vary according to many factors, heat being one of most devastating ones.
It's the same with the enhancements provided with the newest patch (v1.69) though to a lesser degree than CEP and its ilk, like the addition of the colored cloaks... more visual demands. NWN is dependant on OpenGL which "apparently" is not as economical as some of the other rendering methods used by egaming designs. What do those 2 games you mentioned use? The answer to that question may lead to the source of the differences in performance and be valuable to you and others that notice it.
Other than a quick cleaning and reseating of parts, there's not much recourse. The XP OS is virtually trouble-free and even multicore issue have been fairly well-resolved by the community at large.