Synology DS1512+ CPU max and playback issues

Plex Media Server NAS & Devices
1

Server Version#:1.20.3.3437-f1f08d65b
Player Version#:4.44.2
I have seen similar issues in the forums but Plex did playback remotely with no issues a few months back. On network everything works flawlessly, remote play maxes Synology CPU and playback is choppy. I have tried all of the fixes to similar issues in the forums and has not solved the issue. Any help would be appreciated.

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Plex Media Server Logs_2020-10-15_12-20-36.zip (2.7 MB) XML.txt (80.7 KB)

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DO NOT RESTART Plex yet.
Please let me investigate

6

@snave75

I double checked with Engineering and Operations.

You’re a GO! for restart.

It’ll clear itself.

Thanks for your patience

7

Disabled “Use hardware acceleration when available” and restarted. Issues are the same.
Any ideas would be appreciated. I can upload logs if needed.

8

Would I also want to uncheck “Use hardware-accelerated video encoding”?

9

The D2700 CPU in your Syno predates hardware transcoding.

It is at the edge of viability.

  1. It can handle most, but not all, audio transcoding (converting)
  2. it can still handle some SD video in software.
  3. It can’t handle much of anything above 10 Mbps in software. It is only a dual core CPU.

At this point, you should consider one of two paths:

  1. Start migrating the processing requirements to the player devices such as Nvidia Shield Pro and AppleTV which can DirectPlay media without any appreciable CPU load

  2. Curate your media (pre-process) it so that Plex doesn’t need to do anything except DirectPlay it. This means you’ll need to understand what your players can handle, e.g. MP4 and AAC , with subtitles already burned in are the most common.

Alternatively, you could migrate so a more powerful NAS but you’ll need an i3-i5-i7 class machine if subtitle burning is needed . Subtitles cannot be done by the hardware. Intel didn’t give us an interface to do that.

10

I was afraid of that. My frustration lies in that it worked fine for years. Same setup, file types, even multiple users streaming at the same time. I have used Plex for years and recently upgraded to lifetime to get the most of the product. Can you why the changes that causes hardware like mine to become obsolete? Is there any way to revert back to the legacy setup I had that worked?

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The primary reason? The media being acquired has higher bit rates / formatting / included streams which requires more CPU power.

Please hover over one item which won’t play right,
Click the ellipsis
Click Get Info
Click View-XML

put that in a file and attach it. i will take a look

12

The media being played this time is the same media I have had since 2017. See XML info attached.
I can play this on my local network through the same app and it works fine, loads quickly, uses minimal CPU power from the NAS and does not stutter. When I play remotely, takes much longer to load, CPU maxes out and buffers every couple of minutes. Both networks are high speed 1gig up and down.XML2.txt (69.8 KB)

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I do appreciate the insight but I don’t think this answers the question on specifically why the sudden change in NAS CPU usage.

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