Series 9 Better Heart Rate Monitor?

I have a Series 4 and it's never been great with monitoring my heart rate. It can't pick its up about half the time. When I do Apple Fitness, the heart rate works for the first 2 minutes and last 5 minutes of a workout. (I must have dry skin because fingerprint sensors have a hard tine with me too.) Will the Series 9 likely be better? Thanks very much.