Recently, my PC that uses WiFI adapter, started behaving really weird. My usual network speed is 10Mbps,but my PC is not going above 7 anymore. Also, it is extremely unstable. It works in one moment, than drops all the way down to Kbps i guess, for example, if i am playing online game, my ping was always about 20 ms, but sometimes i get huge ping spikes up to 1000 ms, or like huge ping "waves" that goes 200 to 1000 ms over a few minutes. Also, the worst thing is, my other devices like my tablet and smartphone, are practically useless close to PC, their network is ultra slow. But if i go away from my PC, like 5 meters, it is fine... please help. Also, i am a advanced PC user so do not bother with some dumb suggestion. Thanks in advance.