Niagara mesh particle using a VAT has Intense Motion Blur.
Found in 4.22 CL# 6574378 and 4.23 CL# 6763247
Unable to test this in 4.21 and 4.20 as the project provided with assets needed was made in 4.22.
The mesh particle will be a blurry mess with motion blur enabled
The mesh would look as it does in the preview
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-75511 in the post.