I've encountered the exact same problem as described here. I've been having connectivity issues with both (I have 2) EAP1750H's which is especially obvious when using Netflix with Chromecast. Basically the Netflix app constantly looses connectivity with Chromecast which will prevent you from controlling what is being played. You constantly need to reconnect Netflix (other apps have the same issue) app with the Chromecast in order to control it again. This was happening almost every 15 minutes, no exceptions.
Recently downgraded to 2.0.194 and all of these issues are gone right now. I've used the exact same channel, configuration setting as when I was using 361. I've done multiple factory resets when on 361 and reconfigured the device. No luck at all on 361, now when back on 194 the device is working properly.
Has anyone from Engenius ever looked into this issue? It is not hard to reproduce at all.