Wahoo Kickr Bike and Race Mode yields in a cadence on my Fenix 7 far too high

It is the same for Edge 1030 and 1040. I feel your pain - I use my Edge to keep track of stuff like my 30 s power while racing and I agree: turning off race mode is not an option.

Workaround:

The good news is that the Garmin echo system now handles activities recorded by Zwift with respect to training load and similar. Whereas you used to have to record it on your Garmin device, everything now works if you connect Zwift to Garmin and do not record it on your Garmin device.

Dual recording:

You should connect your power meter to your Garmin and your Kickr Bike to Zwift if you are dual recording.

Still no fix for this. However found that on my 540 it is all ok.

No feedback from Garmin so far.

Am now recording with my 540.

However: It is interesting how different the fexix 7 and 540 assess the same ride. Even though the get the same heart rate and he same power I see significantly different values for my stamina and my training state. Can't believe it is the cadence ...

I have exactly the same issue with my Garmin 1040.  Zwift shows the correct cadence but my Garmin 1040 shows cadence >200rpm.  I’m also using race mode.

I have the same issue with Wahoo KickR Bike V2 and a Fenix 7 Pro Sapphire Solar.

Pretty annoying.

Has anyone tried to use a Wahoo Pedal Cadence Sensor (and the KickR bike for Power), or does the Watch prioritise the KickR bike for cadence.

I tried a wahoo cadence I had with my 1040 and it still pulls cadence from the trainer. I don't know if there is a way to prioritize the dedicated sensor, but I was only able to get it working using an ANT to BLE conversion device I had and not passing the cadence data. FWIW when I look at cadence displayed on that device it is also ~150% of actual so not just a Garmin issue. As others have observed Zwift is accurate regardless of what is used so it is fixable.

I have been struggling with similar issue. What I found:

• When I connect my Kickr Bike V2 as a power meter, I get incorrect cadence data
• The data I get is somehow correlated to power, not cadence, but I can not figure out the exact relation. Anyway it looks like the Garmin device is listening a wrong data stream for cadence, or Bike is sending with wrong channel info (or whatever that ID methos is for data streams). The cadence data looks constant if I do a ERG mode workout and somehow follows the power data profile.
• Happens with BOTH Edge 1040 and Fenix 7X

Best solution so far has been to connect the Bike as smart trainer to 1040, and then choose "free ride" (I have the device set up in Finnish so not sure if this is the english menu exact term). Apparently the 1040 in this mode lets another device to control the trainer, I have been using Xert EBC app running in iPhone. I do get power drops in 1040 recorded data though, short ones and they do not mean much, but are annoying. I have been wondering if they are caused by 2 devices clashing when they are both connecting to the trainer control.

I think I will try disabling the race mode and connecting Bike to 1040 as a power meter. I am just confused about the race mode relating to this issue, I thought it is supposed to only work over WLAN... sure everything is possible in when SW is in question so need to give it a try.

Interesting that connecting as a smart trainer works correctly. I briefly tried to pairing it as a bluetooth power meter instead of ANT to see if there was any difference but I couldn't get it to connect. Maybe it's just a bug in the ANT power stream from the bike.