Blinking of margins of mesh - VR

Hello, I am learning VR develompent in Unreal.

I have just imported a ship into UE and I am looking on it with my VR headset.
The problem is that the edges of my mesh are blinking in headset and VR preview on the screen. Some parts especially contrast parts (black X white margin) are blinking. I need the models to be static.

You can see picture and short video from my screen capture (blinking.png, saylyard.webm):

Thank you in advance for your advice.