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I'm not sure what to caption this question but there is a weird artifact that shows up on some frames in my image sequence render. I have a 24 fps config but the animation was too fast so instead of redoing all of the keyframes i decided to do a time remapping of old 100 to new 145. I also use motion blur shutter 0.50 to add some realism. It looks like it has something to do with the plate number/text "McKenzie" object containing an emission shader parented to an empty cube which is also the parent of the car object. And the middle red line-type light below the text and the 2 red back-lights are also emission shaders but part of the car mesh. Any idea what might be the problem or is this normal?

PS: since i found a way to scale the keyframes, i tried again without doing time remapping and still get the same artifacts. I'm using Eevee renderer because Cycles doesn't render clean. I have an old GTX Titan video card. enter image description here

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  • $\begingroup$ Could you share the file? It doesn't need to be the whole scene, just the road and the plate would be fine, if they are the source of the problem. $\endgroup$ Commented Feb 21, 2022 at 6:04

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Increase Steps to 2 or more to give more Motion Blur accuracy.

  1. Go to Render property tab.
  2. Expand Motion Blur section.
  3. Increase Steps to 2.

Render result

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