Venu 4 again frozen and inaccurate heart rate

My watch froze again. Now after 38 minutes of a runnining workout. Before it did it was showing an inaccurate heart rate (constantly around 150 when I was running and then 170 when I took a walking break).

Is there a solution to this?

These are basic functions which should work flawlessly!

After many years with Garmin I am considering to return my watch and give a competitor an opportunity.

Please fix this asap.