Acer Predator XB1 271HU sometimes turns on without showing an image or OSD menu until I power cycle

Hi!

Last week I received my XB1 271HU TN version screen and until know I love it but an issue worries me. Sometimes (it happened 2 times now) when I turn the screen on, the power light ofcourse turns blue but no image is showing up until I turn it off and on again or when I swap the DP cable to another port in my graphics card. 

Now I wonder, is there something wrong with my monitor? Is there just a glitch between my graphics card and monitor?

Also I have 2 red stuck pixels after the monitor warms up and only when the framerate is lower than 100hz. Above these 2 stuck pixels seem to work correctly or only slightly reddish. But not when the screen is fully white. 

This is a replacement monitor by the way. The first one had dust particles between the screen layers.