15v Poor voltage on transformer reading. 24V 40VA Transformer would solve this?

Hello I have the ring pro 2 and I’m getting an inconsistent reading from “good” 16v voltage to a “poor” voltage reading(15v) in the device health setting. I currently have a 16V 30VA transformer. Will a 24V 40VA Transformer stop this from going into 15V poor voltage status? And can anyone recommend the best one to get? Is it not normal for the doorbell to fluctuate from poor to good voltage status? Thanks