Hello guys,
thank to all first
Post a video to explain my problem done a while ago:

https://www.youtube.com/watch?v=JY1LZS05qPc

As you can see it is as if the video signal went away for 1 second

What may be due, sometimes it does so at startup when I have to put the password to enter windows, to know if I have to return the monitor or not.

With my 60hz I had never done anything like this before.

Thanks a lot to everyone in advance

My system:
Mobo: Rampage V edition 10
Procio: 5930k @stock atm
Ram:Gskill Ripjaws 4 F4-2400C15Q - 16GRK (3000mhz xmp)
VGA: Titan Xp Collector Edition
PSU: Seasonic 550w (waiting to rebuild my new pc)