I've been troubled by small bouts of mouse lag/unresponsiveness on the 2 USB mouses I've tested. It was manageable, though. Now, I've installed a PCI-E wireless adapter and things have gotten worse, including the rare bout of USB keyboard lag.
I have a Gigabyte AM3+ UD3 board, drivers up to date on both the board and peripherals. Suggestions? I'm guessing this is a bus problem and that I'll need a replacement board, but thought I'd ask around.