Okay so i just bought a new PC Today, and D3 My computer way more than surpasses the requirements for d3 but yet it lags super bad in full screen, and seems to only run smoothly in Windowed mode at a certain size.
Here's my specs to show what i am running
Microsoft Windows 7 Home Premium
Processor AMD Athlon(tm) II X4 650 Processor, 3200 Mhz, 4 Core(s), 4 Logical Processor(s)
Installed Physical Memory (RAM) 8.00 GB
Total Physical Memory 7.75 GB
Available Physical Memory 5.98 GB
Total Virtual Memory 15.5 GB
Available Virtual Memory 13.6 GB
Radeon HD 4200