What do you mean by WAD?
The problem here is that the scripter form is "design-time". When you "run" it, it becomes "runtime".
High-DPI and scaling is already complex enough in both Windows and Delphi (especially). Adding Scripter on top of it makes it a mess and I'm not sure if a solution can be found.
Have you tried changing the tweaking properties like Scaled and PixelsPerInch to see if and how it changes behavior?