ive just had a dogfight two vs two over the sea with everything at minimum except special effects at maximum at 800*600
right on spot:
frames didnt go under twenty nor over 22, just like a movie
the problem is stutter on land caused by the buildings
if you have an option to remove all trees i dont see why cant you turn all buildings off
i did a litle experiment:
delete the sfs bob_buildings and substitute it by an empty sfs with the same name
now buildins appear as black pixels but even then have stuuters
seems the pc is doing overcalculation on when the buildings should pop up in view