My network configuration has my main router connected to a secondary router which is in bridge mode, and I have a computer connected via ethernet to that secondary router.
If the connection between my main router and secondary router is through an inline coupler, the speeds on the computer are as expected. However, when the connection is thorugh an unmanaged switch, the download speed is unaffected, but the upload speed is basically 0 (speedtest.net can't even finish the upload portion of the test).
The switch has only started causing problems when I switched from the main modem being an ADSL modem from my ISP to a VDSL2 modem.
Any ideas what could be causing this problem? I'm at a loss.