I have the Nvidia Shield 2017 16GB version with a 128GB USB drive attached and setup as adoptable storage. I have an 8TB USB 3 Drive where my Plex Library lives attached. I have great quality watching HDHomeRun Extend using Plex live TV and HDHomeRun Viewer on my Windows 10 PCs and on the Shield. Whenever a Plex DVR recording plays back on windows client or Nvidia shield, I see periodic pixelation and skipping in the recordings. Once the skipping occurs, audio then is out of sync with the video. The HDHomeRun firmware I am using is the latest 20170815 version. I am a Plex beta tester and seems like taking the latest PMS on the Shield has not fixed any of my problems.
I have checked the signal quality of the OTA channels HDHomeRun Extend is receiving and all looks good (100% signal). I am suspicious the Plex DVR on the shield is not quite keeping up or failing somewhere during recording, however not quite sure how to debug. I have my HDHomeRun Extend Default Transcode Profile set to 'none'. The Plex DVR Transcoder Quality settings is set to 'Highest Quality'.
An example of the type of recordings having playback issue saved by PMS have the following characteristics:
Video Resolution 1080p
Duration 2:00:59
Bitrate 8913 kbps
Width 1920
Height 1080
Aspect Ratio 1.78
Container MPEGTS
Video Frame Rate NTSC
Web Optimized No
Origin dvr
Video Profile high
Part
Duration 2:00:59
File xxx
Size 7.53 GB
Container MPEGTS
Web Optimized No
Packet Length 188
Video Profile high
Codec H264
Bitrate 8529 kbps
Bit Depth 8
Chroma Subsampling 4:2:0
Color Range tv
Frame Rate 29.97 fps
Height 1080
Level 4.0
Profile high
Ref Frames 2
Scan Type interlaced
I have googled quite a bit and tried to look for errors in the Plex server log but don't have much to run with. Any advice on systematically tracking down the issue?