I have a python GUI app. When I press a button, it probably takes a few tens of milliseconds to chew on it. I suspect it could be done faster with other tools,

I have a python GUI app. When I press a button, it probably takes a few tens of milliseconds to chew on it. I suspect it could be done faster with other tools, but I doubt I'd notice it. As for the actual work being done behind the GUI, that's a different matter.