PMS remote streaming buffering for no clear reason

Server Version#: 1.25.9.5673-bf5697c5d
Server Hardware:

  • OS: Windows 10 Pro v.21H2
  • RAM: 12.0 GB (11.9 GB usable)
  • CPU: Intel(R) Core™ i7-3770 CPU @ 3.40GHz 3.40 GHz
  • NIC: on motherboard -
  • NIC Configuration:
  • Windows 10 Pro installed on: 2 x SSD RAID Stripe 0 volume (83.4 GB free of 118 GB)
  • PMS, metadata folder, and cache folder installed on: 3 x SSD RAID Stripe 0 volume (263 GB free of 501 GB)
  • Media library installed on: 5 x HDD RAID Stripe 0 volume (5.24 TB free of 13.6 TB)

PMS configuration:

Clients tested:

  • Windows 10 App Player Version#: 1.42.1.2926-415b0e14
  • Nvidia Shield TV Player Version#: 8.31.2.31546
  • Fire TV 4K Player Version#:
  • Samsung Galaxy Note 20 Ultra Player Version#: 8.28.0.30077 (241173d0)
  • I have about 20 users, most using Nvidia Shield TV and 1 Apple TV. All experiencing buffering issues.
  • All clients’ quality settings are set to MAXIMUM / ORIGINAL quality.

Server Internet: Google Fiber
Google Fiber Speed Tests on PMS:

Client Internet: Xfinity
Xfinity Speed Tests:

Issue:
My Plex server has been flawless for the past 18 months or so. It used to load, play, and seek high bitrate (~40 mbps to 50mbps) 1080p videos with almost zero lag.

Recently (past several weeks), I’ve been getting a lot of buffering streaming 1080p content over remote:

I ran some extensive playback tests and noticed this pattern. PMS plays great for several minutes, then it buffers down to a crawl for several minutes. When it buffers, I immediately run a speed test on the same server and the test results are really good. So, I don’t think it is an issue with Windows or the NIC. Screenshots posted at the top. This pattern repeats itself randomly.

I have uninstalled PMS, deleted the install folder, and then reinstalled it again. This didn’t fix the issue.

I ran the server directly to the Google router and this didn’t fix the issue.

I’ve ran speed tests independently on Mac and Mint Linux laptops using the same CAT-5E Ethernet cable, the same switch, and the same router that the server uses and they both returned excellent results.

I’m out of ideas, please help!

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.