Apple Watch 10 + AirPods Pro 3 issue when playing music and running

Hello, I want to ask you, how to solve this problem. When I connect my Apple Watch 10 gen. titan with esim to my AirPods Pro 3.gen (or 1st gen too) and play music, everything is ok. But when I start exercise (running), there is issue. When is my watch behind the body (or my hand) it interrupts the music. It looks like signal can't overcome my body. When I change my AirPods Pro for AirPods Max, no problem. When I play music on my phone and running, no problem. Just when I connect Watch 10 with Pro (1st or 3rd gen.) there is this problem. Everytime. But just last month, before September it was ok. Can you help me, please? Software and firmware is the latest.