Within the last 2 weeks, the volume button on my Apple TV 4K remote has started charging the TV volume by 5 for each press (both up and down). Prior to this is working fine with it going up or down by 1 for each press.

The volume is controlled via HDMI and I think it may have been after a tvOS update that it started, but not 100% sure (currently running 16.5). I can’t find anything in the settings that may affect it.

Anyone have any idea what may be the cause, or how to fix it?