FCPX Playback Offset via HDMI A/V Output?

Does Final Cut Pro X (v 10.4) have a "playback offset" option via HDMI A/V Output?

If not (and why not), how are video editors who use external monitoring via HDMI, aka for a client monitor, (a common practice I would assume) compensating for out-of-sync playback?

Audio via the audio interface (RME Babyface Pro in my case) is in perfect sync with FCPX viewer (on a Apple Thunderbolt Display) but not in the external monitor (A/V Output via HDMI).

Both Final Cut Studio (v7) and Premiere Pro CC had/have a playback offset setting preferences (external monitor sync issues are common). Why not FCPX?

I've followed FCPX A/V Output via HDMI instructions (Final Cut Pro X: View playback on an external monitor or display), and have noted the Apple disclaimer "Note: Video and audio are synced at the video frame (not audio sample) level." Will an A/V output offset setting option be included in future versions of FCPX?

In the meantime, any suggestions as to how to offset the HDMI A/V Output via FCPX would be most helpful.

Many thanks,

Cliff

Setup:

Final Cut Pro X (v 10.4)

Mac Pro (Early 2013)

Apple Thunderbolt Display (27")

HDMI A/V output to external 4K UHD TV monitor (Samsung U40JU6400F)