Bit of background. I’ve been using a Kickr Core with Zwift from Jan '21 until late July without any issues. Then during a particular group ride i started getting what seemed like power spikes, it would correct itself and then the power spikes would return.
Since that ride the power spikes have gradually increased to where they happen every single ride. There doesn’t appear to be pattern to it, it can happen on flat, ascents & descents. It’s never right at the start of a ride but again no pattern, my last two rides it started around the 14 minute mark and then today’s ride around the 21 minute mark. It can last a few seconds to a few minutes.
I’ve upgraded/downgraded the Kickr firmware. Done countless Wahoo app normal spindowns and a factory spindown. Reset the bluetooth on my Macbook, ensured my phone (which is the only other device i have next to me during Zwift) is not connected to the trainer.
Nothing in my set-up has changed at all so it’s difficult to pinpoint anything. It’s now driving me nuts and i’ve obviously had to stop racing as well.
If i could i would attach my latest Zwift fit file but it doesn’t look like i can. I stopped the ride at the exact point the spike happened.
Hopefully someone has some knowledge of this.