Its not about CPU load its about GPU load you wont notice it with 3 D3s, my system can run 10 D3+DB easily in windowed mode, but when I use this resize or DBrelogger resize my GPU load goes to 90-100% with 6 D3+db
I wonder if its possible to resize windowed mode?
Lowest Res In windowed mode is 800x600 but with my i72600k I can run 20 clients and it only uses 80cpu load.