When camera move, object is rattling in renderview

hi! guys. I’m currently working on creating a video in Blender, and I’ve encountered a problem where, during animations where the camera moves simultaneously with the target object, the object appears jittery in the render preview. I’m using the Cycles render engine, and when I render the final video, everything looks fine. The issue seems to be specific to the render preview, where the object appears jittery.

Even when the camera is moving with modifiers like ‘Follow Path,’ the object remains steady with no issues. Could the problem be attributed to the heavy load of Cycles, or is there a workaround? If there’s any solution, please let me know.

render: cycles, supported, GPU compute

It is simply because every time you move cycles has to start the render over again. The initial ray calculations take a little time so the jittering is due to that.

Cycles is not real time, Eevee is better for that (not 100% real time but much faster.)

Almost certainly. If you don’t see it in the final video, that’s what is happening

Please show a capture

Sorry, I’m new users, can not upload movie.

It means that the computational load increases when the camera moves. Thank you.

It could be. Since the preview is smooth when the camera is not moving, I thought it might be a bug or something. Thank you.

You can upload it anywhere else, on youtube, on wetransfer, etc. Anyway it seems folks have identified the issue already

You can easily replicate, open default scene, render preview (cycles), go to camera view, select cube and camera, move them and the cube will “jitter” while you move them.

Not a bug, just that cycles re-initiates the calculation all the time.

Ah right, yes. Well, we don’t have perfectly realtime rendering yet, unfortunately. Should happen within a few years hopefully…

It is smooth in Eevee :slightly_smiling_face:

But I am a cycles fan :upside_down_face: