New Monitor - Micro Stutters (PC)

Hello Guys

I just bought myself a huge samsung 49 inch chg90 144 hz Monitor. And now i do have some terrible Micro Stutters. The game still runs smooth (80 - 120 fps). I can put the settings and Resolution very very low and i still have them. Before i had a asus rog strix xg35vq 100 hz and i never had a problem.

I know theres many topics about it but i dont know what else i should do! Tried so many things!

What else can i do?

System:

Gtx 1080
i5 3570K
24 gb Ram

Thanks for your help guys!

EDIT: MY FIX : I Put everything on Nvidia Settings to standard and restartet my PC.

Anyone? Heres how it looks like: [fixed by deleting Avira] Forza Motorsports 7 stutters - YouTube