Jump to content
XPEnology Community

poor Plex HW transcoding performance // Xeon E3 1285L V4 // 1.04b loader, DSM 6.2.2


Recommended Posts

I've been running an xpenology server since 2015 with DSM 5.1 until last year when Plex required a transition to DSM 6 with x64 packages. I then upgraded to DSM 6.1 with Jun's 1.02 loader and had been fine with that. Wanting to get more performance, I decided to upgrade my CPU from an i3-4130T to a Xeon E3 1285L V4, the best/latest CPU supported by my ASRock E3C226D2I motherboard, which has Intel Quick Sync support. As this was a significant change, I decided to change to upgrade to DSM 6.2.2 and take advantage of HW transcoding support in Plex too.


Installation and migration went fine--I used existing serial/mac from an older Synology 415+. I checked that the Dev/Dri folders existed indicating that HW transcoding was supported. As a Plex Pass user, I enabled hardware transcoding support on the server. I initiated a stream on a device and the Plex dashboard showed that HW transcoding started and minimal spikes in CPU usage. However, the stream never actually played--it was continually buffering and would do so for several minutes and never started. I ultimately disabled HW accelerated transcoding and went back to software/CPU only based transcoding, which starts playing immediately.


I understand that quality may differ while using HW transcoding, but in my case, it doesn't seem to work/start. Am I missing something here? Do i need to enable or add any additional drivers? Is this Xeon CPU not supported for HW accelerated transcoding via Intel Quick Sync?



-upgraded CPU to Xeon E3 1285L V4 from I3-4130T

-upgraded to DSM 6.2.2 with 1.04b loader for 918+ platform

-HW transcoding supported and enabled on Plex server

-with HW acceleration enabled on Plex server, stream continually buffers and never actually starts; wind up disabling HW transcoding

-what gives?


My server hardware:

ASRock E3C226D2I

Intel Xeon E3 1285L V4 / Noctua NH-D9L HSF

Crucial 16GB (2x8GB) DDR3 ECC RAM (unbuffered)

4x3TB WD RED drives


Fractal Design Node 304

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...