All torrents intermittently dropping to 0B/s at the same time.

[leprkon]

I have been experiencing a small problem the past couple days.  My torrents will constantly remain at 0 B/s.  Intermittently, they will all start up again and after a few minutes, the speed will drop back down to 0 B/s.  This for all of the torrents at the same time and this process will repeat regardless of how healthy the seed ratio is.  I thought that this might be a connection issue, but the same torrents will download without issue on my other computer.  I have a similar issue with the upload speeds as well.   



     
Some details -   
Windows 10 with latest updates.
I am on version 3.3.16.   
I have forwarded my ports and ensured that the port being used is open.   
I made sure that my SOCKS proxy login was correct and even tried other IPs/Hosts (I've also disabled it completely).     
I have tried deleting the qBittorrent.ini and qBittorrent-data.ini files. 
I have also added a well seeded torrent only to get the same results.     
I am on TWC/Spectrum with a 200 MB connection.   
I have tried saving the torrents to a different drive.
I have tried deleting the torrents and adding them again.
I have a max of 4 torrents downloading at a time (though before this problem, I had no problems running more downloads simultaneously).
My wireless adapter is functioning properly and shows that my ping is 15 ms, download is 196.09 Mbps, and upload is 22.59 Mbps.   









I thank you ahead of time for your assistance. 

[Switeck]

Your SOCKS 5 proxy and/or wifi is intermittently having connection issues is my best guess as to the cause.

"I am on TWC/Spectrum with a 200 MB connection."

As far as qBitTorrent is concerned, your connection is probably closer to 25 MEGABYTES/second download and maybe 1-2.5 MEGABYTES/second upload max
So that means an upper limit of 100-200 global upload slots, with max active torrents being no more than half that amount. (so 50-100)
Per torrent upload slots will need to be less than the global upload slots amount to prevent 1 torrent from "hogging" most/all of them, so I suggest 10-40 there.
Global max connections can be limited to 500 and connections per torrent limited to 50 (because you'll probably have a lot at once)...if qBT is allowed too many connections at once, it severely impacts both speed and stability of proxy.

You might want to try setting qBT's cache in advanced settings to automatic with 600 second duration instead of disabled. Others with fiber lines have reported much slower speeds (about 1/4th) with the cache disabled.

[leprkon]

Thanks, for the reply.  I only put the speed information in there for sake of completeness.

The settings in the screenshot that I posted are the settings that I have been messing around with to try and fix this problem.  I will definitely take a look at your settings suggestion.

As far as connectivity goes, I wish that that were the issue, but sadly it isn't.  I use the same proxy on my other devices without issues (I have a multi-user account).  And as I've tried disabling the proxy entirely with no change in results.  Furthermore, I monitor my network usage on this particular device and even while torrents are all down, there are no network interruptions.  Thanks again for replying.  I appreciate the assistance.


Edit -
The changes made to the advanced settings actually caused my client to freeze up and crash, so I changed those back to default.

[Switeck]

Did the advance changes (cache to auto, 600 sec duration) crash qBT very shortly after changing to that or was it after 30 minutes?

[pitviper]

I've found that this happens to me when one of my torrents finishes.  I always thought it was because it was copying data from temp storage to final directory. 

[there]

I get what you have. I have a vpn and run winscribe client, but before ran PIA client and got the same issue. This seems to happen on all version 4.0.x and there seems to be no 100% fix.

Per picture below, change the 'Network Interface (requires restart)' to the vpn address. This one sticks and may need a restart.

Now the problem one that always reverts. Reverts either during use or at boot, will revert: 'Optional IP Address to bind to (requires restart)'... select the vpn ip address 10.x.x.x. Do not select 'All addresses' as you will end up with either zero or little throughput. '(requires restart)'... no it does not require a restart to get it working. Once i do the above i get my DHT nodes climb from 0 to 380 mark.

If i also use the proxy designed for torrent use that comes with windscribe Pro and  Windscribe client together tried in various ways including the suggested way but get mixed results, though non being perfect. Think this is normal?, but unsure and is a different topic.

Hope it helps!

[josephblow]

quote:
Now the problem one that always reverts. Reverts either during use or at boot, will revert: 'Optional IP Address to bind to (requires restart)'... select the vpn ip address 10.x.x.x. Do not select 'All addresses' as you will end up with either zero or little throughput. '(requires restart)'..

end quote.

I took this step, and now if the VPN resets (as it does programatically daily), qbittorrent connection speeds drop to zero and stay there (just the the original OP opened this thread to solve).

Quiting and restarting qbt all torrent speeds immeidately restore to the pace of pre-VPN reset.
There is nothing wrong with the vpn, i can tracert from a console prompt into the internet, even while qbt seems "stuck". resetting the VPN does not resolve the issue.
Does anyone else have this problem? I'm not sure how to resolve it. Windows (7) is providng network services, the vpn is working, qbt seems to have "lost" its connectivity to the vpn (though nothing in the UI or log indiates this.)

Is there any qbt setting that would restart the connection if connections drop to zero speed?