Many thanks for your cooperation. Thanks to Jox, Puh, Mm765 and all of you for your interest and help.
It seems like the bugs have been fixed, and the features I wanted to add are finally working.
FPS improved and stays stable, F toggles fullscreen, M toggles Maya cam, N toggles normal fps cam and W toggles wireframe mode.
get it here:
http://www.danielpatton.com/afecelis/src/SplitSep21.zip
@Jox: sorry, had no time to clean the code up, I was very excited to try your stuff. If you can, please check if I placed everything properly!!

as usual, comments are most welcome!!!