Probably MS intentions with UWP clashed with the differences between Windows for PC and other Windows systems, so the tools cannot do all in a quick and almost automatic way, but careful adaptation, tweaking and optimization are still needed and rushed ports will still work poorly. Maybe in the future tools will make things easier or maybe there are intrinsicly non bypassable obstacles and some manual work will always be needed to port games and other SW between different versions of Windows inside this dreamt unified world.







