Very loosely related: " Tixati 2.65.1 breaks Auto Limiter, 0 speed" https://forum.tixati.com/support/6429
It's been an issue for a long time.
When I only have the Upload Limit enabled, it works fine. However if I enable both Download+Upload limits, I trigger the problem where the upload speed drops. At the time I do not have any running downloads (besides channels) but only seed.
It goes like this:
1000 KiB/s upload limit: OK, consistent speed and little ping fluctuation (confirmed in a separate console window)
Add 3000 KiB/s download limit: The upload speed is maintained for 2-3 minutes then drops to around 700 KiB/s with fluctuations. The ping behavior seems to change too but I need to record it to tell for certain.
When I disable the download limit, the ping rises and fluctuates for about 30s and then settles down to a steady state as before.
I would like to hunt it down, but it seems pointless if I don't even know what changes when Tixati's Bandwidth Limiter is enabled fully. I would like a little help here with a few pointers to look out for.
Internet connection: 40 / 10 Mbit/s
VPN: Yes, OpenVPN connected over IPv4 (with IPv4 and IPv6 exit)
OS: Windows 7 x64 (I admit the networking stack has
Tixati: 3.16 and older
I used to be behind a fat shared 1G pipe with big buffers before, there the auto limiter worked fine but with this ISP it doesn't. It's possible these things are connected.