Motion Blur Appears Exaggerated with Planar Reflection Actor in Level and Accurate Velocities Setting Enabled

Motion blur seems exaggerated with a Planar Reflection Actor placed in the Level and the Support Accurate Velocities from Vertex Deformation setting enabled.

I am assuming this is happening because you are essentially rendering the scene a second time with the Planar Reflection actor added.

There is a simple workaround to this issue, by just lowering/disabling Motion Blur within the Post Process Volume.

Note The interesting thing I discovered about this issue is that you do not need to enable the 'Support Global clip plane for Planar Reflections' setting on. You only need to add planar reflection actor and enable the Accurate Velocities setting.

1. Download and Open attached project.
2. Press PIE
3. Move the Third Person Character around in the Level.

Outcome Motion blur seems exaggerated with the default settings.

Expected Motion blur stays the same.