Record two shows at the same time

I’m having a hard time finding anybody talking about recording two shows at the same time. I’m on Synology DSM running the latest beta (1.7.3.3937). I don’t know if this is currently possible, but when scheduling it in Plex DVR I don’t get any warnings and it doesn’t say anything about a conflict. My tuner is the HDHomeRun dual tuner. I try to schedule a recording for two shows at 6PM, for example and one will record and the other will error out immediately saying the tuner is in use. Nobody is watching live TV through the tuner at the time of the error either. If I log into the web interface for the HDHomeRun I can see that only one tuner is in use (the currently recording show).

My question is…is simultaneous recording supported yet or am I jumping the gun on this one? Thank you!

From the Release Announcement for 1.7.2, newer 1.7.3 release showed up yesterday.

Plex Media Server 1.7.2 is now available to PlexPass users (and to all SHIELD users)
NEW:
(Web) Updated Plex Web to 3.7.0
FIXED:
(Metadata) Use 16x9 aspect ratios for 480p and 576p resolution limits. (#6795)
(MDE) Corrected codec decision to prefer AAC over MP3 when on windows (#6737)
(DVR) Stutter during playback of remuxed DVR recordings (#7070)
(Tags) Tags including numbers were sorted incorrectly (#7027)
(DVR) Multiple concurrent recordings could not be made with the HDHR Dual (#6934