Unable to get smooth playback with 1.1.3 on Synology DSM 1515+

[badbonez]

Plex server version 1.13.5.5291

Playing from Synology 1515+, DSM 6.2 (latest version)

Playback of the HDHRViewer stall, lags and just stops. No matter what conversion setting I have set. There used to be the option to use Play Original Quality but that option does not exist with this version of HDHRViewer 2. No matter what conversion setting I pick, the playback eventually stops.

I have tried playback on both Windows 10 and Amazon FireTV, neither are able to playback. However, if I play directly from the HD Homerun setup, through VLC, playback is perfect. So the HD Homerun tuner is working fine.

Any suggestions welcomed.