I have a BEFW11S4 and i just this summer started using the wireless function in it because b4 i just had two computers wired through it. Anyways my desktop i'm on right now upstairs seems to work fine but if i load sites or play a video game i can see when it studders in a signal. Downstairs my computer hooked into the wireless router runs fine no studders but mine upstairs every so often like every min or 2 i'll get a studder in a fps online or on any other game for that matter and my lag in game is around 60 so i know its not my connection. I have a 2.4ghz phone in my house, could that be it? But I only have 1 phone and the computers are only 3 rooms apart. The upstairs computer hasa wireless G card in it but the router is a B router. Is ther a option in the router i need to turn off that could be doing this? What is the optomized best settings for my router, or any linksys router for that matter. I have everything at default settings and i have the newest offical firmware in it.