Thank you for your assistance. Jitter occurs in the following environments. Unity2022.2.0f1 Cinemachine 2.9.5 (also occurs in earlier versions) First, set the parameters for the Cinemachine virtual camera as follows (This is just an example) VCamA Arbitrary Transform I have set Follow and LookAt to the appropriate Sphere, etc. VCamB Transform Position 0,15,0 Transform Rotation 90,0,0 I set CinemachineBrain on the MainCamera Timeline Cinemachine track to transition from VCamA to VCamB. The camera vibrates at high speed, probably because the rotation direction is not fixed. No other scripts are used. Set the following values to prevent the vibration. VCamB Transform Position 0,15,0 Transform Rotation 90,1,0 This does not occur in the timeline preview when not in PlayMode. Is this a bug? Please let me know if there is a way to fix this, such as rotating the camera in any direction.