Winfast and Realtek USB Tuners will not tune in Win10

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2020-08-27 16:27:20.156 [DEBUG][271] No BDA capture filter for this device

This message doesn't necessarily indicate any problem. Some device just don't have a tuner+capture filter. Some just have a tuner filter. That is find if the rest of the graph hooks up.

In the logs, it looks like the WinFast DTV dongle has hooked up fine, and going through the motions for a scan, but in the few frequencies we saw it scan, it didn't manage to lock a signal. Make sure you're using a good antenna connection. Make sure it's scanning the right frequencies for your region.

The Realtek drivers are definitely having an issue:

2020-08-27 16:27:21.057 [DEBUG][271] Unexpected error on DVB-T put_TunerRequest: 0x8000FFFF

In the past lots of people had issues with Realtek devices. I seem to remember them needing old or specific versions of drivers for them to work.