Transmission > Torrents question


macrumors 6502a
Apr 11, 2006
1. Transmission's upload and download speeds are exactly what are slowing down your internet. Duh.

2. I don't think things of this topic are allowed here.


macrumors 68030
Hi, I was recently downloading this program and I noticed that while I was downloading, surfing/browsing the internet seems REALLY slow.

However, I paused the downloads in Transmission and to my surprise, the browsing speed returned normal.

I never experienced this kind of problem in Windows so my question is: did I set something wrong? Like, setting priority, etc.? Transmission has few settings so I doubt I did something wrong.


first time downloading a torrent?

downloading torrents slow down your internet..


macrumors regular
Jul 23, 2005
Guys, from his words "I never experienced this kind of problem in Windows" I'm assuming he used a torrent client in Windows but it did not slow his connection down as much as it does on his Mac. (Am I correct in assuming this?)


macrumors newbie
Jul 13, 2007
No, I don't think there is a lot you can do about this. You could pause downloads when you're using the internet and resume when you're finished.

I think it might have more to do with the upload rather than the download - this seems to slow it the most. Perhaps on your Windows machine the port it uses for uploads was blocked? You could try that (9090 by default I think) but this will substantially cap your download speed as well as you will not be contributing towards the distribution of the files you're downloading.


Moderator emeritus
Mar 10, 2004
Bergen, Norway
Also mind your upload speed (which on many dsl lines are much less then the download speed), if your torrent is uploading at your max upload speed then your requests (ie. when your browser is asking for stuff after you've clicked a link) will be severely delayed, and browsing will seem slow.

This is of course on top of the delay you will get if your torrent downloads at or near your max download speed.


macrumors 601
Dec 2, 2003
Just limit the max upload and download speeds in your torrent client and your web surfing will be fine.


macrumors newbie
Jun 22, 2007
Always cap your upload limit anywhere from 70-80% of your actual total limit if you're manually limiting them. Otherwise you'll never be able to do anything else on the internet.

Also, Azureus has an auto-speed limiter built in, so if you're doing a lot of things on the net, it'll scale down its caps to accommodate that, whereas Transmission won't.


macrumors 6502
Jan 7, 2006
All you need to do is limit your upload speed... say your connection is like mine and your max upload is usally about 45 - 50 kbps limit it to 40 or even 35 and it won't effect your surfing speed much if at all

btw there's nothing wrong with this subject unless the OP was to say "Can I have some advice on downloading copyrighted material please?"