What could be reasons a WPF app would pin the CPU and lock the app on some computers but not others?

Question

Stumped here. Posted a similar question before. We have a pretty large WPF app that on some machines runs great, but on others, all of a sudden, one of the CPU cores gets

Answer 1

Since you seem quite to lack options, i would advice to make a new project with just most basic ComboBox in the Window, doing almost nothing. This should work (check :-) ). Then you add features one by one in the ComboBox and test, for instance when you add command, start with empty one. Do this until it 'breaks'. So you know which feature is the culprit.
You didn t say if all was working with software rendering.