Hello,
I have discovered a weird issue with my download speed.
When I download files from the internet, the speed for one thread seems to be capped at max 10MB/s. But not always.
FTP - my 1st private server => 10MB/s
FTP - my 2nd private server => 7MB/s
FTP - ftp.bit.nl => 10MB/s
HTTP - Ubuntu MATE ISO direct download => 7MB/s
Speedtest - single thread => 10MB/s
Speedtest - multiple threads => 50MB/s (max speed)
The same download cap applies using Wi-Fi adapter on the same computer.
I tested FTP transfers using FileZilla and WinSCP with the same result. HTTP download and speedtest with Pale Moon.
So far I have tested :
- Safe mode with networking - same cap as above. (tested just FTP via LAN)
- Transferring file between two computers via local LAN maxes out the connection at 100MB/s.
- Booting another Windows installation from flash drive maxes out the connection at 50MB/s.
- Transferring multiple files at once from FTP maxes out the connection at 50MB/s. (but each thread / file is capped at the above speed)
- Another cable on another port on router makes no difference.
- Another computer (same model as the one with problem, also Win7) using the same router maxes out the connection at 50MB/s.
- Another computer (different model, Win10) using the same router maxes out the connection at 50MB/s.
My upload is only 3MB/s and this gets maxed out in each case.
To be honest, I am at a loss here. I have never seen such a weird issue (why are the capped speeds not the same ? ) and from the tests I conclude it must be a software problem.
Googling this issue is quite tricky and unfortunately led me nowhere.
Any tips ?