Very Poorly optimized Wifi Performance

I've noticed this issue for just about any Wifi user. LoL is very sensitive when it comes to Wifi gaming. While on Wifi LoL will lag if there's a decent amount of network activity on the home network or if the user is far from the router but getting 4-5 bars. If however you try the same thing in any other MP games they run fine.. Also taking a Wifi adapter and briding it with a normal Network card so another computer at home can have internet will cause endless disconnects when just waiting for a game. However in any other multiplayer game I haven't experienced this issue. Also all these problems go away if your hardwired, I could be using 90% of my bandwidth and not get any disconnecting.