Looking for help with an internet problem!

The term you're looking for is QoS (quality of service). Try looking into the configuration menu of your router, maybe it does support QoS.

If it does you can configure QoS such that it allocates more priority to your connection.

Jam it back in, in the dark.

If the hardware is this one (SG :: Belkin F6D4230-4 Wireless Router) you probably don't have QoS support, just WMM - but this won't help you here (I think...).

I would advice to change the routing hardware, possibly to a device which is compatible with DD-WRT (www.dd-wrt.com | Unleash Your Router), which is an alternate (and open) firmware for a lot of WiFi/routing devices and has among other neat things the QoS feature.

Apart from that you can try throttling the connection speed directly at your gfs system. I think I remember some tool which hooked the network stack and reduced transmission rate to a custom level. However this is a very sub-optimal solution and I'm not even sure it's going to work. Better get some device which supports QoS.

There's nowhere I can't reach.