What is Gen2 MST HUB? is that DP1.3?
I have a EVGA 3 out MST hub, works nicely to keep the cable clutter down but sometimes i do need to hit resync when monitors get powered off for the night.
Using a long DP-DP from pc to desk, then 0.5m hdmi cables to the monitors from the 3x DP outputs with adaptors, although 1 of these is an active dual link adaptor, I have read in some places that the AMD R9-3xx series and above that active adaptors are no longer required.
I am running a Fury-X but not tried it without an active adaptor yet, why shake up a known working display solution right