wifi's not the problem
I know wifi interference isn't the problem. i've narrowed this down to my upload stream sucking all the bandwidth during an upload. for instance, i started to upload a video to facebook, meanwhile i had "ping -t" set on my modem. everything was hovering around 10ms, until i started uploading that video then it spikes to 900-1800ms with a very large jitter. has never done that, and i'm pretty sure it shouldn't.