[PC] Ongoing investigation - poor performance, crashes, resource allocation.

Well all I can say is that for me by under clocking the graphics card I went from a game that was pretty much unplayable even with the lowest settings due to CTD!s to a game which runs flawlessly at High settings. And before I did it I'd tried just about every damn suggestion out there!!! I would seriously suggest people who have a GTX 660Ti and who are suffering CTD,s with no error message give it a go.

The under clock I am using is:

-Memory Clock. -120
-Core Clock -50
-fFrame Rates capped at 35fps

Weirdly it also seems to have fixed the Party Banter issue. Since doing this I have not had one single CTD or freeze in hours of play.

For anyone with an Nvidia Card who wants to try it this is what I would suggest:

1) Uninstall and wipe clean the existing NVidia driver
2) Reinstall the driver
3) Delete the file ProfileOptions_profiles in the Saves folder.
4) Start Afterburner or equivalent over clocking utility and apply the underclocks as suggested above.
5) Start the game and apply your desired Graphics settings.

Optionally you can create a user.cfg file as suggested elsewhere in this thread and use just the line which caps your frame rate. 35fps is fine for me at High Settings.

No, I should not have to do it but until NVidia produce a driver which is stable for all cards at least I can enjoy the game. By the way the issue I had was not due to the card overheating.