Hi guys!
Nvidia's driver team is looking at the reported problems but they need more information, as we've been unable to reproduce it in-house.
Basically Nvidia needs details on how to reproduce this bug. They found and fixed one that was related to the Kol firing off its special ability already thanks to some nitty gritty info. 
If anyone experiencing trouble can post back with explicit instructions or descriptions of what was going on at the time of the crash/problems, that would be extremely helpful to tracking down the issues.
Also, if everyone could please include a dxdiag with their reports that would be great. If it's easier, feel free to just email the info directly to me at bclair(at)stardock(dot)com. Please use "Sins Nvidia Issue" as the subject line.
Thanks!
(BTW - the text bug that was slowing down the game has been fixed internally and will be in the v1.03 update.)