About 15-20 minutes into a boot on my PC, the keyboard starts to lag every 5 seconds or so. For 5 seconds, it's completely normal. After, the keyboard seizes up for around 0.5 seconds and returns to normal. It's no driver issue, I've updated windows etc, I've tried many other keyboard and USB slots. this is INSANELY frustrating, as I play a lot of video-games. Basically, every 5 seconds my keyboard input stops working for 0.5 seconds, and after it seems to 'catch up' on what I typed or tried to do.