Hello Alexander… I am having this exact issue with the Direto XR, I’ve tried with a Wahoo Elemnt and Garmin head unit, Zwift etc. all the same. I’m at the point of wanting to throw the trainer away! I’ve not had one nice experience with it yet!
Can you share the JSON file that fixed your problem so we can see it or try it for ourselves?
Upgrado shows firmware 73 and HW 001 for me. I am willing to try anything now, I’ve contacted Elite today, not heard back but it is a Saturday so maybe they don’t work at weekends?
Thanks in advance - Robert…
So what Elite told me for my Suito:
Pairing an Elemnt with an Elite trainer is known to mess up the trainer. It completely messes up the wheel circumference stored in it
Running a level training from My eTraining should fix this. I also got a JSON file but it writes the circumference to a specific offset in the EEPROM and that might differ between trainers and brick yours.
Does your Zwift show the trainer resistance controll slider in settings? If not, you’ll have to reinstall it after performing the previous step.
A day or two after Zwift started working my Suito (a mere pup of 2 weeks) started knocking, so personally I give up and return it and ordered a Kickr Core.
Thank for the reply Julian. Makes sense about the JSON file. If trainer resistance is the “difficulty” with the Off-to-Max slider, then yes, I have that and have changed it a few times to see what that does.
One thing I have noticed, and if this is a correct observation, then it’s somewhat peculiar, putting the Wahoo into ‘passive’ mode creates the problem, maybe I’m expecting too much, but I would have thought that the FE-C standard was specifically there to normalise settings and variables to eliminate such basic issues between vendor products, I get that some esoteric features may differ, but surely setting resistance on a trainer designed to have resistance set, from a head unit designed to set resistance is a basic & standard feature.
I will wait until I hear from Elite before doing anything. And I’ll try doing a level training session as you suggest, then switch to Zwift to see if things improve.
Thanks again for taking the time to reply.
Robert.
You should also unpair the Elemnt really until Wahoo bothered fixing their Elite compatibility issues.
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What can I say Julian. I followed your suggestions and have completed a ride that didn’t make me want to throw the trainer back at the supplier! Thank you for the suggestions, it’s good to know that I can make it work 
For anyone who finds this thread, my Wahoo Elemnt is on firmware WF48-8862, Wahoo say it isn’t an issue with their software but I’ve tried all sorts including their ‘passive’ mode. Following the advice of @Julian_Klode and simply removing the Elite Direto XR from the sensors known to the Wahoo Elemnt, boom, problem solved… I’ve got Elite firmware 73 and HW revision 1.
I will write to Wahoo again and let them know, but no doubt they’ll reply as they did before and tell me it isn’t an issue their end. I’d love to be able to intercept the ANT+ traffic somehow and decode it… hmm, can the Wahoo be hacked I wonder? 
