Motion Vectors and motion blur

[sniffle63]

Unity version: 2020.3.15f2
HDRP version: 10.5.1

Motion blur seems to be always active if motion vectors are active regardless of if you are using the motion blur post-processing volume or not, and the motion blur that is applied is screwy and has a lot of ghosting (regardless of AA).

Adding a motion blur post-processing volume enabling and setting intensity to 0 gets rid of the motion blur.

The uploaded picture is what it looks like with no motion blur volume and motion vectors on “per object”.

[sniffle63]

Seems this is actually a bit incorrect, there is not a bug that causes it to always be on… it seems there is a hidden set of default post-processing volumes that are always applied inside of your project settings.

Altho this does not change the fact that the motion blur is messed up looking and that adding another motion blur component in the scene itself seems to solve the issue.