I have a Python desktop application built with pure Tkinter that works but feels sluggish whenever a button is pressed. My sole objective is to shorten that pause between the user’s click and the visual or functional response. You will receive the full codebase (Python 3.11). I’d like you to profile it, pinpoint the bottlenecks in the event-handling logic, and refactor or reorganise whatever is necessary—whether that means untangling nested callbacks, moving blocking routines off the main thread, leveraging after() for non-blocking loops, or any other best-practice optimisation you see fit. The interface itself should stay unchanged; the win here is speed. Please return: • An updated, well-commented codebase that runs on Windows, macOS and Linux exactly as before but responds significantly faster to button clicks. • A brief benchmark note (pre- vs post-optimisation times and how you measured them) so I can verify the gain on my side. If you have experience squeezing extra performance out of Tkinter apps, especially around event loops and thread-safe updates, this should be a straightforward but satisfying project.