Slow Audiobook downloads #737

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opened 2026-04-24 23:36:17 +02:00 by adam · 8 comments
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Originally created by @CunningSquirrel on GitHub (Oct 22, 2023).

Downloading books from my server is extremely slow. I’m not sure if it’s just me or if this is expected?

I have my server installed on an HP Micro Server with the following specs:

  • Intel® Xeon® CPU E3-1265L V2 @ 2.50GHz
  • 16 Gigs Ram
  • 5x SSD
  • unRAID OS
  • 2x 1Gig ports configured in bonded mode for load balancing

CPU isles at around 10% and Ram at 8%

However downloading a 1 gig audiobook from Audiobookshelf on my UniFi Wi-Fi 6 AP takes +- 10 - 15 mins. It seems a bit slower than I would have expected? Any suggestions?

I’m using a UniFi Dream Machine as my router and I have the two network cables connected directly into the back of it and I have the two ports bonded in the interface there as well.

Originally created by @CunningSquirrel on GitHub (Oct 22, 2023). Downloading books from my server is extremely slow. I’m not sure if it’s just me or if this is expected? I have my server installed on an HP Micro Server with the following specs: - Intel® Xeon® CPU E3-1265L V2 @ 2.50GHz - 16 Gigs Ram - 5x SSD - unRAID OS - 2x 1Gig ports configured in bonded mode for load balancing CPU isles at around 10% and Ram at 8% However downloading a 1 gig audiobook from Audiobookshelf on my UniFi Wi-Fi 6 AP takes +- 10 - 15 mins. It seems a bit slower than I would have expected? Any suggestions? I’m using a UniFi Dream Machine as my router and I have the two network cables connected directly into the back of it and I have the two ports bonded in the interface there as well.
adam added the enhancement label 2026-04-24 23:36:17 +02:00
adam closed this issue 2026-04-24 23:36:18 +02:00
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@advplyr commented on GitHub (Oct 22, 2023):

This is definitely unexpected. The server and the client isn't throttling speed in any way so I suspect this is something with your device or network. Are you using a local ip address or a reverse proxy?

@advplyr commented on GitHub (Oct 22, 2023): This is definitely unexpected. The server and the client isn't throttling speed in any way so I suspect this is something with your device or network. Are you using a local ip address or a reverse proxy?
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@CunningSquirrel commented on GitHub (Oct 22, 2023):

Thanks for the quick response, I’m using Swag as my reverse proxy for ssl certification on my unRAID containers

@CunningSquirrel commented on GitHub (Oct 22, 2023): Thanks for the quick response, I’m using Swag as my reverse proxy for ssl certification on my unRAID containers
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@advplyr commented on GitHub (Oct 22, 2023):

Have you checked the download speed when not going through the reverse proxy?

@advplyr commented on GitHub (Oct 22, 2023): Have you checked the download speed when not going through the reverse proxy?
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@CunningSquirrel commented on GitHub (Oct 23, 2023):

Just got home, I will check that now and report back

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On Sunday, October 22, 2023, 6:58 PM, advplyr @.***> wrote:

Have you checked the download speed when not going through the reverse proxy?

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@CunningSquirrel commented on GitHub (Oct 23, 2023): Just got home, I will check that now and report back Sent from Yahoo Mail for iPhone On Sunday, October 22, 2023, 6:58 PM, advplyr ***@***.***> wrote: Have you checked the download speed when not going through the reverse proxy? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>
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@mcfrojd commented on GitHub (Oct 28, 2023):

I experience the same problem with slow / never completed download when connected through a cloudflare tunnel, if i connect to the local ip the speed is fine.

@mcfrojd commented on GitHub (Oct 28, 2023): I experience the same problem with slow / never completed download when connected through a cloudflare tunnel, if i connect to the local ip the speed is fine.
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@CunningSquirrel commented on GitHub (Nov 3, 2023):

I’m currently connected locally and it’s about the same speed unfortunately. Could possibly be because I’m hosting it in unRAID. I’ll have to spin up a test server running from its own VM and rest to see if there is a difference.
Here is a clip of my download speed.

Sent from Yahoo Mail for iPhone

On Saturday, October 28, 2023, 5:00 PM, mcfrojd @.***> wrote:

I experience the same problem with slow / never completed download when connected through a cloudflare tunnel, if i connect to the local ip the speed is fine.

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Reply to this email directly, view it on GitHub, or unsubscribe.
You are receiving this because you authored the thread.Message ID: @.***>

@CunningSquirrel commented on GitHub (Nov 3, 2023): I’m currently connected locally and it’s about the same speed unfortunately. Could possibly be because I’m hosting it in unRAID. I’ll have to spin up a test server running from its own VM and rest to see if there is a difference. Here is a clip of my download speed. Sent from Yahoo Mail for iPhone On Saturday, October 28, 2023, 5:00 PM, mcfrojd ***@***.***> wrote: I experience the same problem with slow / never completed download when connected through a cloudflare tunnel, if i connect to the local ip the speed is fine. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>
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@advplyr commented on GitHub (Nov 3, 2023):

I'm not able to see the clip of your download speed if you shared one.

I also host in unraid without speed issues on downloads.

@advplyr commented on GitHub (Nov 3, 2023): I'm not able to see the clip of your download speed if you shared one. I also host in unraid without speed issues on downloads.
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@Torstein-Eide commented on GitHub (Jan 7, 2024):

I seeing very slow speeds (<180kB/s), when using HAproxy, on PFsense.

I see normal speed when going direct.

HAproxy_log.txt
PFsense_HAproxy.txt

Edit 2024.01.09:

I found my error, I had not disabled Hardware offloading for PFsense, when hosting on virtual environment.
https://docs.netgate.com/pfsense/en/latest/recipes/virtualize-proxmox-ve.html#disable-hardware-checksums-with-proxmox-ve-virtio

@Torstein-Eide commented on GitHub (Jan 7, 2024): I seeing very slow speeds (<180kB/s), when using HAproxy, on PFsense. I see normal speed when going direct. [HAproxy_log.txt](https://github.com/advplyr/audiobookshelf-app/files/13854695/HAproxy_log.txt) [PFsense_HAproxy.txt](https://github.com/advplyr/audiobookshelf-app/files/13854718/PFsense_HAproxy.txt) Edit 2024.01.09: I found my error, I had not disabled Hardware offloading for PFsense, when hosting on virtual environment. https://docs.netgate.com/pfsense/en/latest/recipes/virtualize-proxmox-ve.html#disable-hardware-checksums-with-proxmox-ve-virtio
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Reference: starred/audiobookshelf-app#737