Just added a 4K monitor to my editing PC. All was good until I discovered Photoshop CS6 does not scale well on a 3840 v 2160 screen. The menu and tools, etc. are so very tiny. Even adjusting Windows 7 to 175% does not rectify the problem. Photoshop is by far the worst application on a 4K monitor. Guess what is the second worst? Vegas 13 Pro! Although a tiny bit larger than Photoshop, Vegas 13 on a 4K monitor is disappointing. Why is this the case? Image professional use Photoshop and video professionals use Vegas. Yet they are terrible on a 4K monitor. Adobe does not seem to care as they have their heads in a cloud. What about the folks at SCS? Do they care?