Guys, just throwing my 2 cents here. I got the game last week-end and was concerned about the overclock on my GTX 970 overheating in this game after reading this thread and the warning of reports from Nvidia tweaking guide. My GPU is overclocked at the BIOS level by about 15%, so a significant overlock, but the fan profile has been set up accordingly with the BIOS tweaker.
I can report that after a couple days of intense playing, the temperature never reached higher than 80C (and it's fairly warm weather here) and I did not experience any crash or driver issue. I am not suggesting that the issue is not there, but just that it really doesn't seem to affect everyone. The overclock in itself is unlikely to cause the issue, but the overall temperature rise might be. However, it should be mentioned that if the game really is pushing your GPU to unconventional level of temperature, I am sorry to say this to you but your overclock is the problem. No software can push your hardware beyond the max limit of what it should be able to tolerate, it's just not how electronic works. If you overheat, you have an unsuitable / unstable overclock or lack appropriate cooling. Saying no other games does that to your GPU means only that no other games pushes your GPU to the max. Third party tools should be able to help you test your overclock. I can personally say that EVGA OC Scanner X brings my GPU to level I have never seen any game push it to, and that's exactly how you should test to.
If you have any question, you can ask me.
Regards,