Bioshock runs like a dog (X1900 Xfire, Vista x64)

Durzel

Durzel

Durzel

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I don't know if there is something fundamentally wrong with my system, or whether it's just something specific to this game but with an overclocked Xfire X1900 system I'm only really able to run Bioshock in 1380x768 (or whichever the widescreen res is around that one). Any higher than that and it gets pretty choppy. 2560x1600 (my monitor native res) is a slideshow - 3fps at most.

This is with my graphics cards overclocked to 680/855 via ATITool. Crossfire is enabled in ATI CCC, and I'm on driver version 7.8. I haven't run an FPS test but my gut feeling is that it isn't more than 30-40 FPS... I'm struggling to even make headshots at the moment.

I'm using Vista x64 so I can expect a performance hit over XP, but even so it just feels "wrong". Every other game I've got seems to be fine, C&C3 runs fine in 2560x1600, R6 Vegas etc likewise are fine at higher res.

Is there a simple way of testing whether or not Crossfire is working or not? (I don't fully trust ATI CCC). Failing that is there something blindingly obvious I need to do to tweak Bioshock or my system to get it smoother?

(Sorry for yet another Bioshock thread but I thought it might be something other people had experienced and wasn't specific to elements in the game).
 
My single 1900xt plays Bioshock fine @ max settings, (no vsync) 1680x1050, just a comparison for you, thats on a stock 4800 athlon.
 
Might be worth trying the game in single card mode just to see what it's like for comparison purposes. I'd recommend 1280x800 as that shouldn't look distorted on a 2560x1600 panel - exactly 4 screen pixels to every game pixel.

In any event I think 2560x1600 is a bit extreme to be running a brand new AAA title at on previous generation hardware.
 
ill be getting the game next week so i will see how well it runs in 2560x1600 on my set-up. if it runs better i would put it down to ATIT.
 
Installed the Bioshock hotfix?

If so, i'm gonna go with Crossfire being buggy in Bioshock here. Maybe try with just one card and see what you get?

If you still get horrid performance with one card then it might be worth cleaning drivers off and reinstalling them.
 
my x1950pro pc is running bioshock better than my x1900xt, the x1950pro pc is on xp and x1900 is on vista64 so it could be that. not sure though.
 
Just noticed I'm running 7.7, not 7.8 as I thought.

Will install the 7.9 betas (Bioshock hotfix) and try that.

EDIT: Installing the 7.9s seems to have fixed it - running 35fps in 1920x1200 with no overclocking of CPU or cards.
 
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In other news - turns out Crossfire isn't supported on this game by current ATI drivers, which explains why I'm getting speeds that are completely foreign compared to other games. Still, it's playable now which is better than it was before.
 
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