I bought the Archer VR2100 to replace the BT Homehub 5 which was paired with the BT Whole home 3 disc mesh system. Two of the discs that aren't connected to the router regularly disconnect for no apparent reason. I have factory reset the discs and reconnected them and reset the entire network but the issue still remains. I'm not a huge techie but suspect that the wifi connection between the router and the two remote discs (which are literally 10 metres distance in a small house) Can anyone suggest what the issue might be and how I can resolve the it?

Thank you