Hi guys. I have a nMP and a dell up3214 monitor. It runs fine in 10.9.3 at 60hz. I try and boot into windows by starting up with option key held down. Often the mac stays on but there is no monitor activity. It's like the boot options menu doesn't support mst. If I unplug mac from power, set monitor to mst off, then plug mac back in, I can boot to windows, but I'm only at 30hz. I have given up playing with it tonight, but was wondering what experiences everybody else has had with 4k 60hz and bootcamp. Any tips or tricks?