So I recently bought a GTX1070 Hybrid and I have one problem... My primary monitor loses signal for a few seconds multiple times a day. I have a 144hz monitor with G-Sync and whether I'm gaming or not it happens. I tried lowering the refresh rate of games and desktop to 120hz and I thought it was fixed but it's not.

I applied the latest BIOS.
Is anyone else having this is issue? Is there any way to fix it?

Are you using the dp cable that shipped with your primary monitor? Is your dp cable vesa certified? Have you tried another dp output? Have you tried another dp cable?