which OS do you have?
even without the BG stuff the default toolset shouldnt run that bad, i wanna say there was some issue with the toolset on a few of the OSs, it was made for winXP i think and ones after that didnt install something automatically, or somethin like that and it caused the toolset to either not load at all or just crash a lot
was some file on the nwn2 disc the toolset needed that you had to install manually, but i cant remember which
i do remember lots of people complaining about it when they upgraded OS tho, i even had the problem, the not loading at all part
*i did a search for it, most crashes was bc the toolset needs its version of direct x 9.0c, which is what you had to install from the disc manually, it co works with any higher version so it shouldnt cause other issues, i would try that and see if it helps, sound like thats what your problem is tho