I have p4 (2.4gh) --- gefocre fx5200 (125mb) --- ram (512mb) --- windows xp
the problem is when i run pes 800x600 medium the is fast but not smooth as 800x600 low .
what is the problem ?

By the way 1024x768 low works as 800x600 low as 640x480 low .

and 1024 medium works as 800 x600 medium as 640x480 medium

the same as high details .