Just got this router in today, hooked it up and ran several speed tests and they all looked great. I started gaming and every few seconds I get massive ping spikes (over 1k ms) and makes the games completely unplayable. I have a tp-link USB antenna for my PC and my PC is the only thing connected to the router (via Wi-Fi).

Watching Twitch runs flawlessly on high quality when my last router would cause it to drop quality a lot. It seems like only while I'm gaming it acts like the cheapest setup imaginable.