Author Topic: New Modem Kills Internet Connection When Torrenting  (Read 1089 times)

Adelaide_Steve

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New Modem Kills Internet Connection When Torrenting
« on: May 12, 2018, 11:19:24 AM »
Hi all, new here.  I have been using qBittorrent for a few years with my old internet setup with no problems including through a VPN with a kill switch.  I now have fast (for Australia) wireless internet at home with a new TP Link TL-WR841N router hooked up to 50mbps wireless.  The router came preconfigured and hooks into another box and dish on my roof.  It works fine for everything else I have tried on the internet. I can connect my VPN to it ok with a kill switch running and the web surfing work ok.

However, when I flash up qBittorrent and start up a download of a torrent I run into trouble.  It starts ok and runs for a minute or so building up speed. I have the overall download speed throttled back to not use much at present, only around 1.5mbps.  At about a minute in, the speed suddenly drops off and I have to reboot the modem to enable it to communicate with my computer again.  I have tried with wi-fi and ethernet cable, I have tried all sorts of settings and have gone through a few dozen suggestions on other sites. Nothing works for me. Is the problem to do with my VPN?  Is there some setting in the router put there by the ISP that snoops and kills torrents?  I am at my wits end on how to configure things to work again.

I am using an Apple iMac 27-inch running latest version of os High Sierra 10.13.  I am using the latest version of qBittorrent 4.1.0.  I am using IP Vanish ver 3.0.11 with OpenVPN UDP on port 443.

I would really appreciate any advice from anyone familiar with Macs, qBittorrent and VPN and hopefully with this modem.

Switeck

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Re: New Modem Kills Internet Connection When Torrenting
« Reply #1 on: May 12, 2018, 11:23:07 AM »
Use very few connections and turn off many of qBT's extra features and try again.
So 10-50 global connections, other max connections equal or less than that, disable DHT, LSD, uTP, and WEBUI. PEX is ok since it reuses existing peer+seed connections.

Adelaide_Steve

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Re: New Modem Kills Internet Connection When Torrenting
« Reply #2 on: May 13, 2018, 01:53:03 PM »
Thanks for the advice.  I discovered a setting in the router to prevent DOS attacks that was killing the connection when a threshold was hit, that seems to have been the culprit, as no other activity I had done since getting my new internet service was as intensive. In the end I reset the router to factory settings and I no longer have any issues.

Switeck

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Re: New Modem Kills Internet Connection When Torrenting
« Reply #3 on: May 13, 2018, 02:27:41 PM »
"Working as designed" sometimes is a surprise and inconvenient!

Also, many router have something called a hardware firewall that is usually far too much for their weak CPUs and minimal RAM.