Disabling Motion Blur causes menu flickering

[lich120]

Here's a video of what happens when I disable Motion Blur Postprocessing. The menus in my game (simple GFxMoviePlayer), in this case the timer HUD, begin to flicker and artifact. I would like to have Motion Blur disabled as my game takes a 10fps hit when its enabled.

http://www.youtube.com/watch?v=OzbaYzPadR4

The flickering is seemingly random as it will stop for moments but then continue (and usually doesn't begin until about 13 seconds into running the level, but then it is fairly persistent). I tested this in an empty level as well to make sure it wasn't any of my scripts or art causing it. I only figured out it was motion blur being disable causing it because I have one level with it enabled and the articfacting wasn't occurring.

[cargarage22]

Here's a video of what happens when I disable Motion Blur Postprocessing. The menus in my game (simple GFxMoviePlayer), in this case the timer HUD, begin to flicker and artifact. I would like to have Motion Blur disabled as my game takes a 10fps hit when its enabled.

http://www.youtube.com/watch?v=OzbaYzPadR4

The flickering is seemingly random as it will stop for moments but then continue (and usually doesn't begin until about 13 seconds into running the level, but then it is fairly persistent). I tested this in an empty level as well to make sure it wasn't any of my scripts or art causing it. I only figured out it was motion blur being disable causing it because I have one level with it enabled and the articfacting wasn't occurring.

I have this same exact issue, except it only occurs when using DirectX11 with scaleform and there's not much of an fps effect. Causes all movies and clips to flicker and artifact randomly if I have a post process chain and have motion blur disabled.

For now I just adjusted the motion blur settings to do blur 0 or 0.1, and more when the player selects "motion blur on".