Hello
The issue is related to how your HD device rendering this image which unfortunately is out of our control. Alternatively, you can use the following CSS which will replace the image with CSS fading on HD devices only...
@media screen and (min-width: 1920px) {
.vegas-overlay {
background-image: none !important;
background-color: rgba(0,0,0,.6);
}
}
Ciaran