Tried my first 'Tabata' intervals tonight. I knew not to use Erg Mode, but it was really frustrating trying to nail the wattage goals because Zwift responds so slowly - I'd be putting in a huge effort, but the power would lag by quite a bit, and then I'd overshoot, and then I'd back off and undershoot, then overshoot. Lather, rinse, repeat after 10 seconds of trying not to go over or under the "easy" wattage. I ended up completing one set, but getting only half a star because I had so much trouble trying to hit the wattage goals.
Halfway through the second set I gave up.
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"Everybody's gotta be somewhere." - Eccles