12 pro max problem with navigation in carplay

Hello, 12 Pro Max after updating to iOS 26, when connected to a car (CarPlay), the arrow on the navigation map randomly stops and shows 0 speed, even though the car is moving. The problem disappears after a few kilometers, but it returns. The apps don't matter (Yanosik, Google Maps, Waze, and the original Apple Maps). I have another iPhone at home, just a regular 12, also running iOS 26, and this problem doesn't occur. Where can I look for the cause? on iOS 18 the problem did not occur