Out of the box it does have problems.
However thanks to ZeeWolf ( see here
http://www.subsim.com/radioroom/forumdisplay.php?f=203) most of the problems are getting fixed.
He is even working on a Kursk mod due out in March,although it won't be free.
If you can pick it up cheap (highly likely,seeing as the developers went bust) then it's worth a try I think.
Have a browse of the forum link I posted and see if it looks like what you want out of a game.
Chucky.