I'm going to try what you said, but to add; When it freezes, if I immediately Alt-Tab out there is a mini-dump running, it will then say mini dump saved, a path directory and Sins Closes. The mini dump is part of Sins
I just checked and my current installed Nvidia Driver is 156.09. Don't know if that is current or not.
Also reinstalling the game through impulse. Is it re-activate or do I have to uninstall and install.