Are you using fullscreen picwins then? If not then this entire thread is beyond ridiculous. If you are, and for whatever reasons you are unwilling/unable to optimise your code to perform adequately at a reasonable resolution then you've got an obvious, if not ideal, solution: Just use the resolution you want for your picwin and centre it in the middle of the screen with a black background.
I can assure you I know enough about picwins to know that you're probably better off posting this in the scripting forum and asking for help optimising the code than asking for a crazy feature to provide an extremely dubious 'solution' to your problem. One that no doubt very few people would be happy to be subjected to in order to make your script work correctly.
