My girlfriend and I have just finished building identical PCs. Today, we're downloading various software and games to them. We're connected to the wireless network, everything is working fine.
My girlfriend started downloading a game on steam, and was downloading at an average of roughly 5 MB/s initially. I then started downloading the same game.
I would expect the bandwidth to be shared equally between us, but it isn't. Instead, my speed heads up to roughly 5MB/s, while hers drops to around 1MB/s.
As I said, our PCs are identical. Both were built yesterday and had Windows installed fresh this morning. I haven't touched the router configuration for weeks, so definitely haven't done anything to favour one of the two machines over the other. What is causing this skewed bandwidth allocation, and how can I fix it?