Could a new GFX card alter the gameplay?

[the_bengine 0]

I've just upgraded to a 7900GTX and just thought i'd relive the highs and lows of the campaign with the new lovely graphics.

Problem is i can't get past the mission with the sniper rifle on the water tower on the first map!!

I'd played this missions about 4 or 5 times before and never once died. It'd always been like shooting fish in a barrel. Now i've installed the 7900GTX, i only have time to fire off a round or two before getting shot by a SLA troop with an AK47 from about 350 yards!!!

Could it be a harder difficulty setting coz i've already completed the campaign? (the opening mission was no more difficult).

Or could there be a difference in the game caused by the change in GPU?

[max power 21]

If you have selected veteran difficulty, that could be the difference. ArmA doesn't get suddenly harder based on whether or not you completed the campaign, I don't think. If your framerate was really low before, it's possible that that made a difference with the AI. It was said by Suma (one of the head developers) that framerate has a lot to do with AI performance.

[the_bengine 0]

ah. cheers, that may well explain a few things.

and just when i thought i was getting good...

[smellyjelly 0]

It could have something to do with the increased view distance, but that goes both ways. If you could clearly see them, they could probably see you.

[telejunky 0]

The Vd is it i think...This was the same in OFP: With standard vd neither you or the enemy ai did see you but i increased it to 2500m and 'bang' the enemy T-80 hit me...but the higher vd was pretty good against rpg soldiers because the cannot shoot that long way...

[the_bengine 0]

hmm, i'm not so sure that it's the view distance. I haven't really changed it that much with the upgrade.