@d0ugmac1 

I agree with dmac.. 

The EAP110 range operates in the 2.4ghz range and in 95% of the times this same issue is reported, its simply down to airspace saturation.   VERY rarely do I ever see an acceptable airspace for running 2.4ghz

If you scan the airspace with something like WiFi Analyser (android) and see what is happening that might help, switch your AP to the channel that is cleanest.    Sometimes channel 13 is also a good option as its generally not used (1-11 is standard).   Also bear in mind that these channels also overlap, namely 1   6   and   11  are the only channels that dont interfere with eachother so choosing say 7  would interfere with anyone on 6 and 11, 4 would interfere with 1 and 6.. etc etc

N grade claims 'up to 300mbps' in reality this is more than likely 150mbps for connection speed, 30-40mbps actual transfer.  What you have indicated is nothing new sadly

You would find a much improved experience looking to replace this device with an EAP225 which is AC, or EAP610 which is AX grade, either of these support 5ghz and should offer you a lot better performance on devices that support this frequency.