I just did a 40 minute ride guys and as a temporary fix you can do this - go to Pairing and remove your Tacx, then go to Search and select your Tacx again, on the trainer select screen scroll all the way to the bottom and choose the “LIFELINE TT-01” - I found it to be pretty much the same “calculation” as the BlueMatic (its hard to judge but I felt it was probably around 5%w “higher” than the Bluematic on setting 3).
Its not ideal however at least it lets you ride and not have to stop using Zwift.