I have a virtual camera following the player, I'm doing all my updates on FixedUpdate, and the cinemachine brain update method is set to "Smart Update". On both the editor and the PC build, the camera follows the player smoothly, no jitter at all. However I published a demo of my project and some people complained about the camera jittering, I tried to modify some parameters in order to see if I could reproduce the issue, but it seems the only way to make the camera jitter is by changing the cinemachine brain update method, if I set it to "FixedUpdate" the camera follows the target smoothly most of the time, just a tiny amount of jittering at some points, if I set it to "LateUpdate" there's a very notorious amount of jittering. The best explanation I can think so far is that for some reason the cinamachine brain is choosing to update the camera on LateUpdate on some PC's... maybe they are low end PC's with a low frame rate? ... not sure, a guy sent me the specifications of his PC and doesn't seem like low end.