GTA IV video driver crash + low performance in vista
i don't know exactly what's the problem! but few days ago i installed GTA IV then in my FIRST benchmark in highest render setting and medium texture and my view distance was 55 and other setting on 100.
my average FPS were 26-28 in vista ultimate sp1 32 bit! my graphic card is 4870 512 MB.(ASUS)
then in device manager i uninstalled my VGA then installed again with new driver(8.12). in first run game was smoothly! my fps increased to 38! but
after restarting my computer,i lunched the game again to check benchmark again but again fps reduce to 26-28!
i overclocked my VGA to
but nothing happened!
i installed the game on XP sp3 and also installed latest driver(8.12) too!
checked the benchmark.game was completely smooth and fps was 38! i restarted the pc and checked again it was OK! 38-40 fps.
but i don't understand why it happens on my vista!
for example in game sometimes i receive driver crash error message or in game while i playin bowling it goes to blue screen(screen of death)
dump memory and after that restart!
i have all of this problem in vista! any idea?