My D3 is driving me nuts!!! I dont understand why its having frame rate issues, i'm reading posts from all over and people are complaining that their game is lagging. I have a really good gaming computer and I run everything on Ultra and nothing ever happens... but with D3 even when I turn everything to low I still have the same issue...

This problem mainly occurs while in action and when in underground areas like dark places. Not so much for more colourful and bright areas... strange.

I just want to know if this is an issue which Blizzard is hopefully working on.

Computer specifications:
Windows 7
ATI Raden HD6770 1024MB
12GB Ram
1.5TB Hard Drive