Hi, We have MS-120-24P with POE for all the AP MR20 the problem is not related to the network because all the computer connected via Ethernet does not have this problem we have a very good connection to the internet via cable and WiFi when the issue does not appear. For the moment we found a pretty easy solution to schedule the ports on the switch overnight to make a power on/off of the POE ports where AP are connected  We will continue to monitor this ... View more