NDI Video Texture gets brighter and blows out on a paused video.

Sorry i’m new to Unreal but cant find a solution.
I have a simple setup where i’m projecting a NDI emissive Color texture in an empty unlit room. the Video starts out fine but after about 5 sec the brightness blows out ( see png bellow). I can turn down the brightness of the video but then it starts black and fades up to correct brightness.

I’m guessing i’m missing something simple but cant figure it out.

thanks

-Brent