No problems here, what so ever. Using 9.4 catalyst, and seeing 100% scaling with crossfire. Funny though, with xp UT3 was only giving me about 60% scaling. One major thing that I noticed right away was that 1920x1080(1080p) was working properly finally on my HDTV. Win 7 even detected it as my native resolution. What a difference between 1280x720 and 1920x1080.
The benchmark started at 14/05/2009 11:38:14 PM
Operating system: Windows 7 Ultimate
System memory: 2047 MB
CPU: AMD Phenom(tm) II X3 710 Processor
CPU speed: 3333 MHz
Graphics card: - 0 MB
Benchmark type: Flyby
Motion Blur: Disabled
Hardware Physics: Disabled
Anisotropic filtering: 16×
Same for me, I get about 10 fps drop (from 36 to 22 in Rails, max details 1080p) in WIN7. Nevermind Ati drivers crashing & BSODs in games and on desktop. Maybe I'll try reinstalling WIN 7 but I doubt it'll help, it was a clean install the first time, so it's probably just my HW & WIN 7 don't get along together, at least not just yet.
Windows 7 RC 64-bit
Intel Core 2 Duo e6700 2.66 ghz
NVidia Geforce 88000GT 512 MB
2 gigs DDR2 667mhz RAM
Asus p5nsli motherboard with NVidia Nforce 570SLI chipset
Things I've tried:
Clean reinstall of NVidia 185.85 drivers
Clean reinstall of UT3
Disabling Hardware Physics in both game options and NVidia control panel
Setting MaxMultisamples = 0 in UTEngine.ini helped somewhat as it seemed with Windows 7 and DirectX 10 it was trying to force AA with HDR, and changing any settings in the NVidia control panel, even to "force off" made the situation worse
Even turning all the graphics to the lowest settings and resolution, I still get major hitches, hiccups and poor frame rates
No idea what's going on. For what it's worth, Call of Duty 4 also runs significantly worse under Windows 7 for me, but games like Fallout 3 and Oblivion run fantastically better. Interesting.
Also this isn't just me having some kind of pro-unreal 'sperg out over losing a few FPS, frames rates have literally been dropping into the teens at certain points (courtyard area of Shangri-La, Shock rifle room in Arsenal, one HOLP ctf map runs at like 5 fps) making the game unplayable. There's something broken or wrong.
I had to switch from Vista to Win 7 beta just to get my FPS to work properly. There are places on maps like Deimos where my FPS would drop for no plausible reason. Switching to Win 7 beta allowed my FPS to jump up by 20 fps in those same areas!
I also get consistently better performance in Valve games as well. Not sure what is wrong with Vista but I am personally looking forward to Windows 7.
I also have serious performance issues in UT3. In small DM-Maps like ShangriLa i have performance drops from 45fps to 25fps using the same hardware as with XP. It's not the video card slowing down my system, because the card is 15°C cooler than under XP. Resolution doesn't matter, I have the same framerate in 1680x1050 and 640x480. Even 4xAniAliasing is for free, it doesn't cost even 1fps.
I have tried 3 drivers (185.81, 185.85 and 182.50 which is for Vista but also works in Win7) but I got the poor performance with all of them.