No that is a very typical running temp for a relatively demanding game. I believe 95c is the cut off but that's too hot for me. I try to keep my temps as far below 80C as possible but 60-70s C on more demanding games is pretty common to observe. You're good. If you're really worried, keep afterburner running in the background and see what the max temps your gpu hits and see if it's for any real sustained amount of time, if it's just a few seconds in the 70s that's good. If you see something much hotter for much longer (minutes at a time in the 80s) you may want to dial back any OC settings factory or not.