Hey Akumaburn, it might be on diablo 3's end. Just as a check what do you have the Background FPS setting at in diablo 3? for some reason i think when the monitor is turned of it might put the game into the background and i know the default settings on diablo is 5 or 6 FPS, and the way diablo works is FPS effects your latency.
No adapter, vga port and dvi on monitor. Going straight dvi to dvi.VGA is not digital...
It's not the output on the GC but the input on the monitor that qualifies the signal while using the DVI connectors. I'm pretty sure you use an adaptor from DVI to VGA.
I have this same issue.. it is caused by the AMD graphics cards detecting when the monitor is off and automatically going to an Ultra Low Power State (ULPS).. this drops your in-game frame rates tremendously.. and makes it so that the bot is unable to operate.
I have not found a work around.. this appears to be hardcoded into the drivers/bios. Even disabling ULPS with TRIXX doesn't work.
Only solution I have found is to keep the monitor on but have it go into its idle state.. When the monitor is idle this does not occur.. only when it is fully powered off.
It also happens when I lock my computer, or when I try to minimize the game..
I currently just play in window mode and alt-tab whenever i want to switch windows.. as minimizing the game window has this same effect.
No adapter, vga port and dvi on monitor. Going straight dvi to dvi.
Cable looks like DVI-D single link on both ends, but DVI-D dual link port on Acer monitor end and DVI-I Dual link on pc end