So im not sure what is the problem.
My system is Mac Book Pro 2013 /w retina
2.7 GHz i7
16 GB 1600MHz DDR3
Runs on Flash HD
OS X 10.8.5
**I already set my mac to run at high performance utilizing its NVDIA Ge Force GT 650M 1024MB
My Diablo setting is running in Fullscreen.
1968x1230 (16:10 Widescreen) Resolution
Vertical Sync is checked
Texture Quality - High
Shadow QUality - Medium
Physics - High
Clutter Density - Medium
Anti Aliasing - not checked
Low FX - checked
My character, a hardcore Barb lvl 60 literally skips every second. The FPS doesn't go above 35 and every time it skips it drops to 10-12 or so.
Others with the same system and run the same game with much better settings for Diablo 3 does not have any lag issues.
So i don't know what else to do here, please help.