This may or not help someone.
I’ve had them since launch and as I’ve said before always been pretty unstable.
I have a new process of connecting that seems to be fairly reliable (minimal disconnects).
I’m on a kickr bike connecting by BT to windows 10 PC. I let zwift connect to the bike for power, control and cadence and also connect to my Tickr before even touching the plays. Zwift thinks it’s all done and start the okay button countdown. I stop this and turn on left play, let it connect (buzz) then turn on right play (buzz) and the pairing tile goes blue. Then I click okay and head into game.
I’ve found that if the plays are on when the bike, HR are trying to connect they buzz and connect but the tile stays orange and the plays are then pretty unstable.
Hope helps someone and be good to hear if it does or I’m just clutching at straws.