Set WinPE resolution without MDT integration

[Siroj]

I know that it's possible to automatically set WinPE resolution by setting the X and YResolution variable when using MDT integration. Using an unsupported (low) value results in automatic detection.

We want to incorporate the same solution, but without MDT integration. I can't find a solution to this, so my question is if this is even possible?

I won't mind adding some custom variables or making other customization's.