I'm having major lagging issues with NWN2 all of a sudden. I've played through MoW and most of the OC and it worked perfectly fine, apart from the obligatory rubberbanding, but now the walking animations are suddenly off, out of sync, the characters movement isn't smooth anymore. The first time I noticed it, it was raining in the area I was in, so I thought maybe it's due to weather effects and perhaps it didn't ever rain before? But then I went to a different area and it was still lagging. So I loaded a savegame from Act I or II, to see whether it's connected with the advancement in the OC - nope, still laggy. I was afraid that something had happened to my graphic card, but it seems to be fine. Rebooting the PC didn't help either.
Does anyone have a clue what could have happened and why? Is this a known issue with NWN2 or something on my end? 