Connection failure duritgree rides

I ride a justo elite trainer connected through BT. When I ride free rides I often -and sometimes very often- experience conney failures, just like that, out of the bluy. It really kills the vibe. When I ride workouts I don’t have any problems at all.
Today I was doing the 4 horsemen route. I must’ve had more than 6 connection failures. In the end all of a sudden I flew up a 13% climb at 2000watts… Whatever I did, this kept happening. I quit the ride.