Heart Rate (WHR) is showing complete wrong data since upgrade to version 4.10

Before the upgrade to version 4.10 the HR was very accurate and almost 100% aligned with Treadmill sensors and chest strap sensor. Now the HR is about 20-30 beats too high!!

I changed to Garmin because I wanted to get rid of the chest strap... And now i'm really considering to return the watch (as it is even less accurate than my former cheap Fitbit which was for which I only paid 100 bucks...). 

Has anyone else the same issue???