Seeing allot of shutter in DVR off HDhomeRun(s)

Started about three releases ago (late November)

I am seeing: (mostly 1080P HD channels, but noted on SD as well) (RECORDINGS have been unwatchable in many cases)

  • shuttering
  • skipping(dropped frames)
  • worst problem is buffering issues with repeating (about 1 second or 2 of show will repeat)
  • Starts after about 20 minutes
  • worst with multiple streams (3+ tuners, but have seen it with only on tuner)
  • DO NOT SEE USING HDHOMERUN APP, only see in plex records

I have not had this issue before about a month ago. The server has not changed in over 8 months, close to 3TB of tv shows without issues until now.

Server is Linux Mint 18.1 Serena (updated to rule out OS), Processor AMD FX™-8320 Eight-Core Processor, 16GB ram, system on 128GB ssd, 4 drives in a mdadm raid 5 for Plex Media Lib storage(ext4)

Issue has been seen in all the following release: plexmediaserver_1.9.7.4460-a39b25852_amd64.deb, plexmediaserver_1.10.0.4523-648bc61d4_amd64.deb, plexmediaserver_1.10.1.4561-9de2951fc_amd64.deb, plexmediaserver_1.10.1.4602-f54242b6b_amd64.deb

I have been trying to troubleshooting the issue:

  • Replacing Cable RBG-6 cables (100% single good no issues I can see from hdhomerun card menus)
  • Added second 1gb intel nic and moved hdhomerun(s) to a separate network (no other data but them and the plex server)
  • hdhomerun prime (2- total 6 tuners) - latest firmware 20170930, Cable tuners for Spectrum Cable
  • I don’t use plex comskip , have nightly job that does that (disabled that job to verify was plex issue)
  • Verified issues in original TS files from plex. This is not a player nor playback transcodign error, this is Plex server DVR.
  • turn on verbose logs and debug logs, but can not really find issue, logs appear capped at 5 megs, (can only see logs for last 15 minutes, they rotate out to quickly) Is there a configuration option for logs So I can I tell plex server to keep larger logs (may 20-50 megs)?

How can I increase log retention?

I have noticed that as well using Happauge 955Q and DualHD tuners in my Windows 10 configuration. Seems like it started 2 or 3 versions ago. I edited the TS file and found that after about 30 mins it started repeating segments of stream or overlaying segments so that it is impossible to edit. This looks very much like a transcoder bug. PlexElves - please fix for Christmas!