Synology DSM 7 Docker Slow/ Hangs with direct unpack

[Freak96]

Hello everyone,
i am a long time "read only" user of this forum but now i can´t find a solution for my problem.

I´m using SABnzbd in Docker on a DS918+ with DSM 7. Container is linuxserver/sabnzbd:latest.

I use the internal M2 Cache SSD as a Volume (Samsung Evo Plus 970 1TB) and 12GB RAM .

Normally my download speed is about 110mb/s.

With direct unpack "on" the speed drops down to about 30mb/s with the start of the first package to unpack and stops for a few seconds on the start of the next package to unpack.
With direct unpack "off" the downloads starts and jumps quickly to about 110mb/s, after about 10% the download hangs for a few seconds and than starts again.

On a Windows Machine i´ve got no problems and the native DSM Package on DSM 6.X also runs smoothly.

I think it must have something to do with my Docker Setup.

Hope someone could point me in the right direction.

Thanks in advance.

[sander]

Wrench symbol -> status:
-> resfresh Arrow ... What speed numbers do you get: CPU, disk, Internet?
-> test download 100MB ... What speed do you get?

[Freak96]

Thanks for the quick reply.

System Performance (Pystone): 60472
Download Folder Speed: 216.3 MB/s
Complete Folder Speed: 218.5 MB/s
Internet Bandwith: 33.1 MB/s (should be higher i think)

Test Download Speed:
100MB: 63 MB/s (max)
1GB: 96 MB/s (max)
10GB: 110 MB/s (max)

[sander]

Disk speeds look OK.
Newsgroup downloads look very good ... so no problem with those downloads?

[Freak96]

The Problem is downloading larger files and with activated direct unpack.

For me it seems that the download temporarily paused when the direct unpack process begins (eg. Unpacking 01/09)

After this the download start again but with slower speed and stops again when the next direct unpack process start (eg. 02/09).

I will try to make a Screenshot of the Grap this Evening to make it more understandable.