Windows Forms on hi-def screen

Problem:

I just got a new Dell Precision laptop with a hi-def screen (1900x1080 on 15.6") and that is no longer the case. Everything seems to be sized "smaller". All the docking and anchoring properties are still set and functional, but instead of a control spanning, say, the entire width of its parent, it only spans 2/3rd of the width. I can "correct" this by resizing every control and then recompiling on the laptop. But then when I run this version on a non hi-res-configured machine, then the inverse occurs where everything is "too big".

My current thoughts:

It seems like windows is configured to scale things so they don't appear tiny on the hi-res screen. I know that fonts, for instance, are larger. They've scaled things so that font 10 appears the same size physically (i.e. on the screen). I imagine that this scaling thing is what's causing the inconsistencies, but how the hell do I avoid this problem?! It would be massively awesome to not have to compile a "HD" and "non-HD" version of the code.