Replaying to myself.
Just 2 real water training done after my last mex but, yes, stopping the dashboards screen scroll appear to be a walkaround to the iQ! error. For me at least.
None of 2 cases the Vivoactive HR has returned the error after well beyond respectively 3 and 2 hours of continuous use.
Forum guys, give it a try and send a feedback.
Maybe we can help Alan.