[FernetMenta]

Thanks @menakite, I'd not spotted code was needed there.

@FernetMenta We know when the Pi has finished it's part of the refresh rate change (it takes a few vsyncs and we do get a callback when that is done), but the TV may then take a number of seconds to stabilise, and there's nothing on the HDMI cable that shows when that is complete, so I don't think anything better can be done that using a GUI setting (or just living with losing the first few seconds).

@popcornmix I f you have an idea how to promote this into general code, let me know. Pausing or some other appropriate action after changing refresh rate is not VideoPlayer specific. paplayer or picture view need this too. That was the reason I removed the gui setting from the video section and moved it to system - video.