I seem to be losing focus on random sections of a design visualization animation, and I can't figure out why. Using Unity 2018.1 in standard 3D mode, Cinemachine & Timeline. The PBR Render Target depth of field is set to auto focus, and I believe all the settings are pretty much default. No post processing. It mostly happens for 10-20 frames at a time when there are things in the foreground, but not even all that close - like 20-30 feet from the camera. Is there a fix for this?