MacOS Hardware Deinterlace

I have noticed that when installed on MacOS, the DVR server does not have a hardware deinterlace option, even when using recent intel hardware that is quicksync capable.

Does the h264_videotoolbox api that appears to be used during transcoding - abstract hardware based deinterlacing - or is deinterlacing all done in software on MacOS?

Also what are the performance differences, if any, for linux or windows vs MacOS for the Server OS?

The macOS videotoolbox api which wraps quicksync does not expose deinterlacing options. Our software deinterlacer is optimized for the mac so it doesn't matter very much.