If you are on wireless and not close to the proximity of the router, I would think things will start to get funky with lost packets, or even time outs because of the location of devices, you aren't going to drown out the router if you have a weak signal and are a block from the AP.
I've had up to 3 wireless devices running through me at one time, but this was my own network for testing and not a fat pipe of data going in or out.