PySimpleGUI/FreeSimpleGUI is pretty heavy, it includes lots of features and items that are never used in When as weell as data (such as images) that are of little or no use in the application itself. Moreover, as a wrapper around tkinter, it is more difficult to use third party libraries and widgets that could be useful. I'll take the effort to switch to plain tkinter and see whether this will help make the interface more responsive and have more control on its components, either native or third party.
PySimpleGUI/FreeSimpleGUI is pretty heavy, it includes lots of features and items that are never used in When as weell as data (such as images) that are of little or no use in the application itself. Moreover, as a wrapper around tkinter, it is more difficult to use third party libraries and widgets that could be useful. I'll take the effort to switch to plain tkinter and see whether this will help make the interface more responsive and have more control on its components, either native or third party.