Remember everyone to please send in a support conversation so we can collect your logs and specific setup information!
Support Conversation link: Contact Us
How to find log files: https://support.zwift.com/en_us/how-do-i-find-my-log-files-(cycling)-SyTW0JZSX
The problem is not caused by Zwift but by the Neo 2. Tacx is working on an upgrade. When there is an update available this will be posted in this forum.
I don’t think it is Tacx as the cadence works fine on every other third party app, only zwift has the problem.
Hello
Same problem with my Tacx Neo 2, the cadence is normal in the Tacx Utility App but crazy in Zwift (When I ride at 90rpm, the value displayed in Zwift changes each second: 0, about 90, and about 170rpm)
For workouts without rpm requirement, the ERG mode is almost ok, despite of the cadence issue.
But impossible to achieve workouts with ERG mode and specific rpm to keep.
I’ve got the same information from local dealer.
Maybe you have some reply from Tacx support?
J ai le même problème de cadence avec ZWIFT, elle fluctue en permanence de 0 30 130. Avant la mise à jour pas de problème de cadence.
I have the same problem with my neo 2. Cadence is all over the place. Normal on the tacx utility app.
So assume its a Zwift or bluetooth issue?
Hello,
I got an answer from Tacx support, which solved the problem:
We believe that we found a solution for this by updating the firmware.
This firmware is not available in the Utility app but will be released soon.
You can also upgrade the firmware via the file in the link below:Can you please try attached download firmware link on your smart trainer with the Tacx Utility app.
Forward his email to an mail address that you can access on your smart phone.
Now open the email on your smartphone and click on the link below:
Neo2_pack0.18.tacxfirmware - Google Drive
Be sure to click on the download button (marked by a red circle in the image below).Choose to open this file with the Tacx Utility app and connect your trainer (wait for the circle to become green).
When your trainer is connected choose "Update" to begin the firmware installation.
Wait for the firmware installation to complete and follow the instructions on screen when necessary.
Once the firmware is installed, you can use your trainer again.
Sorry for the inconvenience.
==> The version 0.0.18 for Tacx Neo 2 in the Tacx Utiliy App solves the problem of cadence in Zwift ! 
Thomas
After updating trainer to 0.0.18 there are no more blinking cadence but values are still cheating,
stuck on some value, for example 24 RPM for 100-200-300-400W on the same gear
Neo 1 owner , my cadence is reading stupid high or normal after latest update. MacBook pro latest iOS.
Hey James can you make a separate thread for Neo 1 or send in a support conversation?
Fixes the issue for me. BLE is as stable as Ant+ again!. Thx for sharing!
Fixed it for me as well. Thanks a lot
It s OK for me.
Thanks a lot.
I had also cadence issues and this firmware update did improve. But still inaccurate cadence values during my training just finished.
Don’t know what else can be done
Hello.
I made this update to neo2 and the problem was solved
tks
Hi,
did the update and have also issues again. It stucks at different values for a while like the others. I hope I can solve it with ANT dongle, becauase actually not possible to make a training with this cadence issue.
Just received my ANT stick, other issue. Cadence stuck at highest value and needs about 10 seconds to refresh. Powervalues are correct and smooth. Doesnt’t work .15 firmware and .18 firmware same issue. Now I have to buy a separate crank sensor, not possible to drive trainings with this issue.
try to use the BLE… and see what happen
I tried different settings also with .15 and .18 firmware. No way to display the cadence correctly. Had before the Tacx flux and there were absolutely no issues.