distortion on background for 2d side scroller game. [UE4-27]

Hi,
I’m currently working on a side scroller game. I am experiencing some distortion on my background when moving the character. I was able to reproduce this issue with the basic side scroller game that comes with the engine:

here: Imgur: The magic of the Internet

I seen this issue on several machines, so I know it is not specific to my development machine.

Thanks for any help.