forgive me but i am a novice when it comes to network engineering, and may not be formulating the question to the standards here.
i bought 5 edimax pro CAP1200 AP's. even when using a single one, and doing say a a standard speedtest, it would start off fine, then drop entirely, and disconnect, then once again suddenly jump back up to full speed. doing this over and over. running continuous ping results in the same, on-and-off.
this happens whether i have a single AP enabled, or all 5. i have the same ssids for 2.4g, and a separate for the 5g. same results when multiple AP's are enabled.
the AP's are connected to a cisco switch, with one one of these PoE injectors inline: http://www.amazon.com/WS-POE-8-48v60w-passive-Ethernet-Injector-cameras/dp/B0086SQDMM/ref=sr_1_1?m=A2SZCFXJT89WME&s=merchant-items&ie=UTF8&qid=1439267639&sr=1-1 - as opposed to powering each AP individually using the supplied power adapters.
i used this guide for the initial setup. and everything seems in order at a glance: http://www.edimax.com/edimax/mw/cufiles/files/media/images/edimaxDE/CAP1200/CAP1200_QIG_DE.pdf