Have you tired changing the wireless 2.4GHz from Auto channel to 13 for example, As it sounds like is deregistration/disconnect clients before it moves from 6 to 11 to keep it from a noisy wireless channel.
Zen Unlimited Fibre 2 Residential 80/20
Mill Hill LWMIL Local Exchange
Edited by francisuk25 (Sat 29-May-21 00:01:08)