Cinemachine Free Look using too much CPU

Using the Cinemachine freelook camera, or any other Cinemachine camera lowers the performance in my game drastically. Setting the Cinemachine Brain to either Fixed or Late Update seems to have the same effect with Late Update being significantly worse.

 

Can you profile that in a build and check if it's still an issue? What's the target platform? What specifically is slow in Cinemachine (just drill down further in that profiler)?

Profiling in the editor is often misleading, because:

According to the following video, it seems many Unity developers chasing ghosts, because the memory and performance problems they find in the editor, do not exist in an an actual build.

Spoiler: Unite Seoul 2018 - When optimization goes wrong