I am using 3 M5 Decos with DSL internet, my max available internet speed is 13 Mbps.  At first he decos at first work fine and give the full 13 Mbps speed.  But at some point after about 2-3 days the speed drops to 1 Mbps.  The speed test within the deco app will still show 13 Mbps, yet devices all get 1 Mbps.  Directly connecting to the DSL modem/router via ethernet or wifi also give 13 Mbps.  Somehow the Deco system is dropping the speed.  After I reboot all 3 Decos the 13 Mbps speed comes back for a few days and then goes back to 1 Mbps.