Please improve non-activity heart rate tracking.Fenix 7X Solar

Hello everyone, firstly I love my Garmin Fenix ​​7X Solar watch.

Let's be serious, non-activity heart rate monitoring is simply abysmal.The accuracy of the heart sensor is not accurate.. Too much lag between 35bpm / 45 bpm.It's just too much for a watch of its standing. I am on firmware 8.18 and for me nothing has changed since the launch of the FENIX 7.

Can you update to improve this ???