Having trouble with my fire stick - doesn't show connected until the 2nd or 3rd time I turn everything on. Fire stick is plugged into avr media player hdmi slot. Fire stick remote turns on avr and tv. TV screen says no connection. Turn everything off and then back on. Usually connected on 2nd time, sometimes takes a 3rd time. After connected, fire stick remote controls everything and all the streamers work fine. Have tried adjusting fire stick equipment control settings, but can't get this issue solved.
We have: Denon s770h AVR
samsung 55qn90d tv
3 speakers, 2 of which are in wall, one central speaker
new hdmi 4k connectors
fire stick 4k max
Any advice?