I use MST to run my dual HP Z27Q monitors (5K 27-inch). Their only connection is a dual DP1.2 inputs - so I have four hefty cables coming off my GPU. I believe

I use MST to run my dual HP Z27Q monitors (5K 27-inch). Their only connection is a dual DP1.2 inputs - so I have four hefty cables coming off my GPU. I believe what you’re describing is a feature of Thunderbolt, not DP.