@Orskaug this issue already have since firmware V1.2_201013 me also same problem , i downgrade the firmware to V1.2_200630 so the speed back to normal. that means tp link to take any action on this...

u can downgrade from ur computer type 192.168.68.1 log in to ur acc deco then go to setting at that page can down grade ur firmware

my x20 after upgrade also having the same problem, but after i downgrade firmeware the internet speed is back to normal

pls send the new firmware to me please

@freescoring 1. Did the speed slow down since the firmware upgrade? --if not, there is no need to downgrade the firmware；yes after upgrade internet slow so i downgrade back 2. Did the Deco work on...

@TP-Link yes i already downgrade firmware and now the internet speed is normal . and im cable direct to deco x20 is router mode. my normal speed is 295Mpbs after upgrade firmware only can get 95Mpbs....