Yesterday I changed my ISP to one that allows port forwarding. Today the port forwarding has been enabled by the company and I set it up on the router.
After enabling it, my download and upload speed dropped from peaks of 50 MiB/s and valleys of 4-6 MiB/s to a very stable 2 MiB/s. Nothing else has changed in my qBittorrent configuration. If I close the ports again, the speed goes back to normal. I checked if the ports were open on various websites and all of them show that they are forwarded.
I was looking forward to be able to port forward and connect with every possible peer for years, and today has been a big disappointment in that regard!
Has anyone else seen something like this and if so, can you point me to the right direction to fix the problem?
Edit: Thanks everyone for your time and your help! Still working on it, but it’s heartwarming to be on the receiving end of the goodwill of this community.
Sometimes I love the internet!


Its identical ish to what you’d do if you host a website. You can also do that and just try downloading a large file from it (still while outside your network)
Would downloading a movie from jellyfin work?
Strictly, yes.
Dude, so sorry to reply to you this late. It’s been a very chaotic week and I have not even thought about anything else but fucking work.
I’ll try tomorrow, today I need to just be an amoeba.
Thank you for your help, and again, I’m sorry for leaving you hanging!
Oh you don’t have to apologize.