2015-10-08, 21:39
Unless I'm seriously mistaken, "Sync playback to display" affects only DVDPlayer. It's "adjust refresh rate" that affects both. In that case you can decide whether to use it for both or only one of them. I personally handle refresh rate switching through madVR only.
Hence, for #2, I think it doesn't matter.
Hence, for #2, I think it doesn't matter.