I started to have this issue: I have RB4011iGS+5HacQ2HnD and cAP ac connected to it. Each on one floor. Both serving 2 and 5 GHz WiFi. On my RB4011iGS+5HacQ2HnD the 5GHz got stuck in "initializing" state with, I believe 6.44.2 version. I upgraded to 6.45.6. 5GHz started cycling in "de...