How do you improve Cinemachine Virtual Camera Transitions?

We are using C# to switch to a crash cam when a collision is detected. In the video below at the 20sec mark you can see that the camera transitions cuts instead of smoothly changing.

Any ideas on why this happens?

The first collision was very easy to miss at the :08 mark.
The 2nd went as planed :10.
The 3rd has a unwanted camera cut during transition :20.

I was hopping someone might have input.