2024-09-02, 08:19 AM
I thought I'll add what I found out in case someone else has a similar problem. It seems that the mobile network provider is artificially limiting the data rate depending on the destination. I set up a VPN to my home network and it had the same low data rate as without VPN which seems to indicate that it's not based on the type of traffic. Then I tried a a VPN of a commercial VPN provider which meant that for my mobile network provider the destination was one of the commercial VPN servers, and from there the traffic was sent to my home network. This resulted in a data rate much more like the speedtest I'd done. So with home VPN or without any VPN it was around 1-4 Mbps, while with commercial VPN it was over 30 Mbps.