Hi!
Ive had this issue for a while, but only now took time to look more into it. In the video, you can see especially if you watch the foxes ears, that they get blurry/theres noise blur when it moves.
I have tried to turn off motion blur in the project settings.
I have also disabled it in the post process volume and in the player camera.
Is there something I’m missing? Is it not motion blur?
Thank you in advance!
I assume you’re talking about the white streaks when the ears move down?
Is this a movie you captured by filming your screen? Because that artifact looks almost exactly like LCD display panel switching lag.
Yes its the white streaks 
This is for a game, I just recorded to show how it looks with OBS.
It happens in the editor too.
Others who have playtested have also noticed it on their pc.
is there a setting for that?
I think the whole engine is doing this at the moment, I’m assuming it’s Lumen. 
Ah, yep, lumen was the issue. I hope its fixed sometime soon 
Okay never mind… Disabling lumen got rid of some weird noise on the foliage, but not on the animal when its moving
Basically anything that moves does this, for me…
Good to know I’m not the only one then. I’ll wait for a fix until then. Thanks for the fast reply!
It might be some other feature – Ambient occlusion? Bloom? TXAA?
Sounds like some experimentation is in order.
It’s something that was rolled out with 5.