That is also an interesting point. I wish I would have tried a workout and ERG when the issue was happening. I did a couple short workouts with ERG, post-fix, but since I already did the factory spin-down, it went fine. I did some rudimentary testing with using the various virtual gears - sequential vs. Shimano, flat vs. all rounder, messed with using Companion to pair vs. in-game pairing, and also took the trainer in and out of race mode, activating smoothing (the latter two from the Wahoo app) - all this prior to my last resort - the factory spin-down. Testing was very hasty, I was really agitated and frustrated after I realized what was going on, and I just wanted accurate power. I have a Saris H3 and if this issue isnāt resolved relatively soon (with the firmware mentioned above), Iāll probably just revert back to putting my SLR 7 back on the Saris.
You shouldnāt feel in any way responsible, or guilty. The trainer is meant to be accurate and self-calibrating. But I know how you feel. I want everything to be accurate and a true reflection of my ability, I certainly donāt want to feel I ācheatedā. But you are part of the solution for reporting your experience, not the problem!
Thanks, Dave - I appreciate it.
I was also wondering if I could use it as an excuse to buy a set of Favero Assiomas! Not sure Iād get away with that though 
Donāt feel like crap,ā¦ I see this as a solution to a problem. My wife wants to get the virtual shifting for her Core, but I want her to wait until all this has been settled. Now that Wahoo has been involved hopefully something with happen after all these months of issues.
I noticed my watts were behaving erratically back in July and found the thread below. I followed the instructions to manually turn off virtual shifting, started doing Wahoo spin downs regularly again, and the problem seemed to go away. Iām going to charge up my power meter pedals to test this out again.
There are definitely multiple threads about this since a little after the start of the year and the introduction of auto calibration and virtual shifting.
Edit: I also did a factory spin down after turning off virtual shifting. For me, it was important to use the manual method to turn off virtual shifting because it would sometimes turn itself back on when I just use the switch in the user interface.
Iāve had the same issues on the core. I noticed I wasnāt super tucking after getting a zwift click. No PM to verify but I was going 10-15% better than normal.
I hope wahoo add an option to turn off auto calibration.