SnowDrifter 8 Posted August 23, 2021 Share Posted August 23, 2021 Getting some 4k content, and noticing that when set to 1080p high, it has to stop and buffer contantly. Task manager indicates ~60-80% cpu usage. HW transcoding is enabled in plex. Running: baremetal - i3 9100 - asrock rack c246 wsi - 6.2.3 U3 w/ Jun's 1.4b - DS918+ and driver extension Plex seems to indicate transcoding is taking place on hardware and cd/dev/dri ls indicates card0 + renderD128 present in the folder Turning off hw acceleration + transcoding in plex yields no change in performance or CPU usage. Quote Link to post Share on other sites
0 Solution premikkoci 3 Posted August 25, 2021 Solution Share Posted August 25, 2021 Probably caused by HDR tone mapping. Native PMS on Synology does not have necessary drivers to do HDR tone mapping using GPU and so video transcoding is done by GPU and tone mapping by CPU. To utilize GPU for both video transcoding and HDR tone mapping, You need to use docker linuxserver.io PMS version which have all drivers. So first try to turn off hdr tonemapping in PMS settings to make sure that the problem still occurs. 1 Quote Link to post Share on other sites
0 SnowDrifter 8 Posted August 25, 2021 Author Share Posted August 25, 2021 cat /usr/syno/etc/codec/activation.conf shows no such file or directory Now the questions is... How to fix that Quote Link to post Share on other sites
0 SnowDrifter 8 Posted August 25, 2021 Author Share Posted August 25, 2021 That was it, chief. Thanks!! Quote Link to post Share on other sites
Question
SnowDrifter 8
Getting some 4k content, and noticing that when set to 1080p high, it has to stop and buffer contantly.

Task manager indicates ~60-80% cpu usage.
HW transcoding is enabled in plex.
Running:
baremetal
- i3 9100
- asrock rack c246 wsi
- 6.2.3 U3 w/ Jun's 1.4b - DS918+ and driver extension
Plex seems to indicate transcoding is taking place on hardware
and cd/dev/dri ls indicates card0 + renderD128 present in the folder
Turning off hw acceleration + transcoding in plex yields no change in performance or CPU usage.
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Share on other sites
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