Torrent Slow Down

I remember this tendency back in the day when I used to download a lot, my router would freeze up and I would need to restart. Now that the Buffalo is under pressure, anything that is connected to it remains connected, but nothing else can connect to the router via wired or wireless connection. I’m sustaining a constant download of 380 to 450 Kbps throughout the day, the ISP must hate me right now, this is going to last for at least another two weeks. I find it funny that the router can’t seem to handle this much consistent throughput.