As the title says the first tiem a transition happens it’s not happening smoothly while the second/third/etc time everything is working as expected.
I can’t reproduce this. I switched back and forth between 2 vcams, and everything was ok.
Could you provide more details (CM version, Unity Editor version)? Could you send an image of your CinemachineVirtualCameras and CinemachineBrain please?
Ended up recording a video.
https://drive.google.com/file/d/1fohATVTJQNeuDFOAD7_EhTW9WzxnQF3e
This is not happening only the first time but everytime the two cam are not “close enough”
Attached a screen for each cameras
Ok so from what I can understand using Cinemachine Input Provider input is not updated on a global bases but on a per camera bases this mean that a disabled camera is not “following” my input movement when it comes to aiming for this reason there is always this small adjustment.
Tried with a StateDrivenCamera with all the sub cameras enabled and I’m having the same exact behaviour.
Can you send me a repro project, so I can investigate? 
Have you tried setting this in your vcams?
