Hey Guys,
                 So I've just bought this TP-Link router model TL-WR820N, i have an fiber connection of 50mbps which is pretty stable on Ethernet but when i use my phone and try to download or browse something the speeds at start are awesome at 50mbps but then suddenly after a couple of seconds it falls all the way from 5.3MB/s to 50 Kb/s, i though its due to congestion as there are many APs around i tried changing channel optimizing and whatnot but this problem still exists, so can anyone help me out with suggestion or any advices to fix this unstable connections, Also i forgot to mention i'm a little far from router but the signal strength is quite good around 80%+ so i don't think it's the distance