Adjust display refresh rate only on Start

Right now there are only these options:

– Off
– On start/stop
– Always

I’d like to know if it’s somehow possible to have adjusting the refresh rate only at start of a video and not when it stops?
I’m asking because i’m using a video projector and each refresh rate change lasts up to 8 seconds, which is quite annoying when watching short clips, trailers, youtube videos.

Therefore it’ll be nice to have an option to only change when starting a video and leave the current refresh rate while browsing the menus.

Is that possible?