Here are today's Neverwinter Nights forum highlights, collected by NWVault (http://nwvault.ign.com). Please take into account that these are only single parts of various threads and should not be taken out of context. Bear in mind also that the posts presented here are copied as-is, and that any bad spelling and grammar does not get corrected on our end.

<font size="3" face="Verdana, Arial" color="#cc6600">Brian Chung, Technical Artist</font>

100% CPU usage (http://nwn.bioware.com/forums/viewpost.html?topic=547768&post=4804610&forum=42&highlight=)
I wouldn't call it low-end, my dad's laptop (Toshiba M30) had that same GPU and when I ran NWN, it ran just fine at its native 1280x800 resolution. There might be a driver problem somewhere, try downgrading versions.

*Sighs* Mod won't test.... (http://nwn.bioware.com/forums/viewpost.html?topic=547900&post=4804719&forum=46&highlight=)
There shouldn't be a difference using F9 from the toolset or starting it up normally, so the problem can't be there (other than problems that might occur from the first PC in your character list having an invalid something).

Try loading the mod up using the dedicated nwserver and see if it crashes there too. If so, then something, probably an OnSpawn() script, is going out of control during the module's load. If not, then check your OnClientEnter() or OnEnter() script for the starting area, as it might be doing something to the player when joining.