Being Diablo3 well i think its consider to be a 10 years old game ? ?
Thats rather HIGH ! I mean usually most games i play , even better graphics , more mechanics , effects etc . It only take up to 50 - 60 % i never reaches 70% before till now.
But i can get a sweet average 90 + FPS in Diablo3. Well cant really tell because the numbers changes so fast but roughly i can tell its around least 80 - 90 average.