Continuity camera. Mac mini M1 and iPhone SE 3 gen as webcam

Hi there!

The link between my macmini M1 and my iPhone SE 3 gen for the use as webcam is not reliable. Sometimes it works, some other it doesn't. More often the latter, but when it starts, it goes great.

The macmini uses a cabled connection with the router, but it also has the wifi on.

The other continuity camera features work fine: for example I can import photos from the iPhone with ease.

Any suggestion?