Hi @Steve_Kerr2038 welcome to Zwift forums.
Are you using a smart trainer that broadcasts its own power and cadence signals? Having a power signal from the crank and also the trainer presents setup options that can work for you, or work against you. I have a power meter crank (Shimano) and a Saris smart trainer, and I’ve run into something like what you’re describing.
In general - if you have a controllable trainer, I’d recommend you pair Zwift to the trainer’s cadence, power and controllable signals and skip the power meter crank.
Sounds like your frustration’s worse in a structured workout using ERG mode? In ERG mode especially, you want changes in cadence to translate instantly to changes in power, which in turn quickly adjust resistance.
When I pair to my crank, that feedback loop seems noticeably slower compared to when I use the trainer’s power and cadence signals.
As far as the crank’s signal - I leave mine paired to the bike computer on my handlebars, and don’t pair it to Zwift at all. This way, Garmin Connect / Strava record my indoor and outdoors rides pulling data from the same source, and I don’t sweat the inherent variance compared to the data from the trainer.
Other routine things:
- Your crank meter’s batteries are topped up, yes?
- Is the firmware on the crank meter up to date? While you’re at it, update the firmware on your trainer too.
- I use a Windows laptop with an ANT+ dongle stuffed in a USB port. I find the ANT+ connection more reliable than the Bluetooth with my Saris, but YMMV. If you have a device that can you can use ANT instead, try that.