For some reason I get horrible wifi speeds on my iPhones and iPads at my home. My house is fairly small and I am usually no more than about 25ft from the router. I have tried 3 different routers all with the same results (LinksysWRT54gl, Buffalo N450, and now im using a Netgear Nighthawk)
Here are some results of the speedtests ran back to back running off an iPhone 6plus
D 4.52 2.81 16.07 20.35 0.06 45.55
u 3.56 1.24 12.21 13.80 20.16 20.08
My current speeds from my IP are supposed to be 200/20. The ping times are also ridiculously inconsistent as well. When pinging google it can go from 30ms to 900ms in one test. The issue isnt constant but its enough to cause problems streaming/browsing internet. The reason I think its just with my iOS devices is because at the same time im running tests on my wireless PC and getting a pretty consistent 50/15mbps. And when I hook up my laptop vie ethernet i get about 100 down.
Modem: Motorola SB6141
Router: Netgear Nighthawk R700 fw:V126.96.36.199_1.1.67
Currently 10-15 devices connected at any one time. and iOS devices on 8.4
UPDATE: I purchased a new Nighthawk r7000 router, assuming there was something wrong with the old one, and I'm still having the problem. It is now happening on my desktop occasionally, as well. It appears to be mainly restricted to the 2.4 band. There isnt anything around that I can tell that would interfere with it but I am not sure how to test it definitively. I tried turning off encryption altogether thinking the overhead is slowing it down but that didnt help either.