Jetblack whisper smart trainern

Hello all
I have turned off my controller because it is too inconsistent with changing the resistsnce and i can be spinning without any power on the flat. I have rode this way for months, recently getting some tri bars to give me another position to sit on the bike because standing is out.

I assumed it was a problem with the trainer but last week i connected to fulgaz to participate in the virtual LE’Tape event and noticed that the smart trainer works well on that platform.

Is Zwift looking at this? I note the utube video from Shane Millar when he tried the trainer 2 years ago.

Some help would be appreciated.