I am using an Logitech Harmony Elite connected through bluetooth and I noticed a few days ago this happening.
sudo echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr and my remote had difficulty reacting on play/pause.
With the banding issue, I needed quite some remote actions with above enabled, I noticed it repeated infinite the commands I was issueing.
It even happens to disconnect from bluetooth sometimes, connecting through bluetoothctl gives an very informative error then:
Failed to connect: org.bluez.Error.Failed
When I clear attr again, engage a movie so it resets to the default 8bit, the remote is acting normal again it seems.
This all maybe sounds stupid, it does for me as well, but this seems to be the matter.