They are only wireless access points.
As said there are many factors effecting wireless terminals.
Wifi coverage/interferance is on a whole the first thing to sort. You want good coverage throughout, a single IP provided box is generally not enough for most places other than very small place where box is nicely positioned centrally. Just having a connection and working internet doesnt = good rdp etc, low signal or interferance quickly drops throughput.
Also consider 5ghx is supported by tablets as higher frequency is generally a bit clearer from interferance from neighbouring SSIDs