Also let me add, I would run nvidia experience to update the drivers, it would download, install restart and when I opened nvidia experience to verify the install it said it needed the driver. None of this happened when I put in my older msi card.
It is pretty hard to believe that the card is new, do you break the seal yourself? What you are describing seems like artefacts appearing on the GPU it is better to return the graphics card to the store and make the seller test it in their own PC or motherboard just to confirm, you have to return it before it's too late