For the last several months now, I've been having a problem where every 5-10 minutes, my connection would cut out for a second or two. When I'm using my browser, this manifests as lag spikes and, occasionally, Mibbit (IRC client) disconnecting. When I'm trying to use my Nintendo consoles (3DS/WiiU)? Whatever I'm in the middle of doing gets completely disconnected, making any sort of meaningful online gameplay completely impossible. I am an avid gamer, so this obviously presents a huge problem for me.
This has been a constant thing, not just sometimes popping up; aside from one specific instance lasting for two days, the interruptions occur EVERY 5-10 minutes without fail. This problem has remained across two different routers of completely different brand, so I'm fairly confident the router is not the issue. Does anybody know what could be causing this?