optimize your code

Lots of information on that here: https://docs.microsoft.com/en-us/windows/uwp/debug-test-perf/performance-and-xaml-ui - in general, it is about being really careful with the code that you write, and using the CPU sparingly. Lots of work has been done on asynchronous code development, as probably the biggest CPU burner I've come across recently is wait loops "are you done yet? are you done yet? are you done yet? are you done yet?"