1 minute ago, Cotroneo said:
It used to be in the other slot when I used a Cryorig H5, but with the D15, it's an issue of clearence. Speaking of the H5, I had better temps with that, but I wound up using it in a build for a buddy. So it honestly might be like what others have said about the paste drying up, or it not being seated properly now that you guys reminded me of the H5.
You shouldnt have a clearance issue with that cooler, it'll be tight but the card will fit in the top slot. It has higher bandwidth than the lower one. - I have the same cooler
Take a try at reseating that big boy then, use a perfect amount of paste and make sure the thing is tight