Legacy lockup in XP

[Mogul]

I can play for a while and it works fine, but after a couple of minutes the game freezes. Solutions?

[DooMBoy]

Windows XP

There's your entire problem. XP is not the most stable version of Windows for playing Doom or Doom ports.
Just go back to Win98SE-I have it, and it runs everything Doom-related (and otherwise) fine for me.