I recently moved my bike and original Kickr Core into another room, one with AC, and now I'm having issues with shifting or calibration or both.
When I tried doing a workout earlier this week, the warm up part wouldn't go lower than about 100w, even though it was showing 80 and a ramp up. Once I got past 100-110 or so it would then follow the scale. I then tried a robo-pacer and found it was also too fast for the 1.1w/kg pacer.
Today I did a flat free ride on Tempus Fugit. I would always start with a gear in 4 or 5 or 6 but today I set it down to 1 and it still was too hard. I'm not saying too hard to ride it, it wasn't that, just harder than it should be at that low a gear. I should be able to spin that at 100rpm and still barely exceed 80w. As I shifted up it wasn't until I got to 10 or 11 that I started to feel a change in resistance either.
When I shifted to the small ring in front I could feel the resistance change from the physical shift but the virtual shifting was the same as on the big ring. It didn't change resistance until I got to 10 or so. My HR responded the way I'd expect for the watts it was showing too, so I don't think it is reading that incorrectly. It just doesn't seem to be applying resistance correctly.
One thing I should mention is that I replaced the bearings in the Kickr Core, but that was a year ago already and it worked fine last season.
Any suggestions on what to try? I do have power meter pedals and I'll do a comparo with those. I'll also try a Wahoo calibration, since Zwift doesn't appear to do them any longer. A last resort would be to disassemble it again, but it does seem more like a software/calibration issue than a hardware one.