Heart rate hits peak immediately Charge 5

[RobbyD80]

I'm getting really frustrated with my device. When I go on a run my heart rate immediately goes to peak. I won't have made it a block and my Fitbit charge 5 starts to alert me to slow my roll. I stop and take my own heart rate and have never been over 80. As I said I haven't even gotten a block.
I've called multiple times and talked with support staff. We've tried restarting the device, changing my max heart rate and numerous other fixes and nothing seems to change. I can be in a spin class for 40 minutes and never go over 150. Is this a common thing? What can I do to fix this problem?

Any help would be appreciated. Thanks all.

Moderator edit: subject updated for clarity

[DavideFitbit]

Welcome to the Fitbit Community forums, @RobbyD80. 

I appreciate all the information that you've shared about the inconvenience you've been having with your Charge 5 and for confirming that you already tried a few troubleshooting steps. 

From what you mentioned, it seems that you already tried all the basic steps shared in the forums to improve the accuracy of heart rate information. I've been informed that you have indeed contacted the Customer Support team for further assistance with this. In this case, I recommend that you continue the communication with them so they can provide you with the next steps. 

Thank you for all the feedback provided about the product. 

See you around,