Playing DOOM/NEODOOM

[Todd Gruhn <tgruhn2%gmail.com@localhost>]

I found a came called NEODOOM that works with doomlegacy.
After a certain amount of time it likes to slow to a crawl, and
I need to stop to let things catch up. If I make the window smaller
(640 x 480) it still does the same thing. NEODOOM alss has a lot
of Hi Def weapons and explosions, etc. How do I know if the problem
is the graphocs card, nouveau, or the game?

Has anyone else played NEODOOM?