Sync display with video only if at least 720p

I’d like to see an option where syncing the refresh rate with the video is only enabled with content that is 720p or higher. I still have many 480p videos from my DVD library, but when KODI tries to playback 480p content at 1080p/24 it occasionally “sputters” and looks like it’s playing at 5 frames per second. If syncing the refresh to video is disabled, however, this fixes this issue.