I have been unable to save my progress in any classic doom game, whether it be ultimate doom, doom 2, or final doom. I got the games off of the collectors edition disk. Whenever I try to save, the saving screen lags for a second before showing up. When I choose a save slot, it lags for a second before I can type my name in. While I'm typing, the letters lag for a seccond while I press the keys. When I press enter, the game unpauses as if the saving went through, but when I go to load my game, all of the slots are empty.
*I use the latest version of Windows XP.
*This has always been a problem on the system I am playing on.
*I have tried Windows 95 compatability mode.
*The game still functions properly, save for invisible stuff. If I look at my gun or a monster while they are invisible, the life bar shows up in the middle of the object.