# Freeze system during optimizaion
**URL:** https://forums.plex.tv/t/freeze-system-during-optimizaion/839173
**Category:** Plex Media Server
**Tags:** media-optimizer
**Created:** [April 25, 2023, 4:31pm UTC](https://forums.plex.tv/t/freeze-system-during-optimizaion/839173 "2023-04-25T16:31:02Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jorman\_franzini\_gmail\_com](https://forums.plex.tv/u/jorman_franzini_gmail_com)
#### Post date: [April 25, 2023, 4:31pm UTC](https://forums.plex.tv/t/freeze-system-during-optimizaion/839173/1 "2023-04-25T16:31:02Z")
Server Version#: 1.32.0.6973
Hi, I am experiencing a problem with the plex server. If I play a video from outside my home, I have no problem (I’ve only tried 20minutes), the video plays smoothly and I guess it is “converted”.
If however, I tell Plex to optimize a video, then after a while (it is not always the same) the whole system goes into freeze and I am forced to reboot the machine.
I own a Qnap TS-251B “modified” with Debian 10 as the operating system, 16Gb RAM.
The processor is a J3355 → [https://ark.intel.com/content/www/us/en/ark/products/95597/intel-celeron-processor-j3355-2m-cache-up-to-2-50-ghz.html](https://ark.intel.com/content/www/us/en/ark/products/95597/intel-celeron-processor-j3355-2m-cache-up-to-2-50-ghz.html) and if I understand correctly I can “take advantage” of the integrated GPU as “Intel® Quick Sync Video” is available.
Plex is run through Docker and this is the stack that runs it:
```auto
version: "3"
services:
plex:
image: lscr.io/linuxserver/plex:latest
container_name: plex-server
network_mode: host
environment:
- PUID=65534
- PGID=65534
- TZ=Europe/Rome
- VERSION=docker
volumes:
- /docker-config/AppData/Config/Plex:/config
- /data/Multimedia/Serie Tv:/tv
- /data/Multimedia/Film:/movies
- /data/Multimedia/Foto:/photo
devices:
- /dev/dri:/dev/dri
restart: unless-stopped
```
and this is the startup log:
```auto
[migrations] started
[migrations] no migrations found
───────────────────────────────────────
██╗ ███████╗██╗ ██████╗
██║ ██╔════╝██║██╔═══██╗
██║ ███████╗██║██║ ██║
██║ ╚════██║██║██║ ██║
███████╗███████║██║╚██████╔╝
╚══════╝╚══════╝╚═╝ ╚═════╝
Brought to you by linuxserver.io
───────────────────────────────────────
To support LSIO projects visit:
https://www.linuxserver.io/donate/
───────────────────────────────────────
GID/UID
───────────────────────────────────────
User UID: 65534
User GID: 65534
───────────────────────────────────────
****Server already claimed****
****creating video group videoi983 with id 107****
****adding /dev/dri/renderD128 to video group videoi983 with id 107****
****adding /dev/dri/card0 to video group videoi983 with id 107****
Docker is used for versioning skip update check
[custom-init] No custom files found, skipping...
Starting Plex Media Server. . . (you can ignore the libusb_init error)
[ls.io-init] done.
Critical: libusb_init failed
The '--scan' operation is deprecated and will be removed in future versions of Plex Media Server.
The '--scan' operation is deprecated and will be removed in future versions of Plex Media Server.
The '--scan' operation is deprecated and will be removed in future versions of Plex Media Server.
```
I couldn’t figure out why it crashes from one moment to the next, I also can’t figure out if the GPU is actually being used for video file optimization.
Does anyone have any ideas on how I can “capture” a log to figure out what is causing the whole system to crash? Or, does anyone have any advice for this situation?
Jorman
---
### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [July 24, 2023, 4:32pm UTC](https://forums.plex.tv/t/freeze-system-during-optimizaion/839173/2 "2023-07-24T16:32:00Z")
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