Shortly, PSEUDO is a 'fake' fullscreen, it's mostly a window stretched to fit the entire screen area while the 'real' fullscreen is a full screen support for 3D application.
On older versions of the sim, PSEUDO was better for ATI cards being stuck at low clocks while playing, but this has been solved a while ago, so actually the only difference i noticed between the two is that pseudo lets you enter the 'refly menu' (ESC) immediately while fullscreen needs to restart the video application to enter the refyl menu.
S!
|