As some of you may know, the classic Unreal Tournament, and possibly also Unreal itself, but I haven't tested it, suffer from a bizarre form of slowdown on newer computers, largely traced to both Vista and processor management facilities. The game literally runs in slow motion, not stuttering or lagging, but literally as if the 'speed' of the game has been turned down.
My question is this, has anyone who has had the issue found it has been resolved by the GOG team's efforts? Also, if anyone from the team is out there, would they be able to comment if they have encountered and fixed this bug, it effectively prevents people from playing properly on newer machines, and no 'quick fix' I have found online, such as mapping the process to a single core, or making sure speedstep is turned off have worked.

This is a common problem to Unreal... it happened for me until i installed the 227.e patch, and changed the renderer. Direct3D and Glide (as I suspect gog's version) are the only available but quite outdated. Go check my topic called Unreal Patches, it would help you :)
If you don't want to install the patch (to get full compatibility with the add-on), you can grab several OpenGL or Direct3D rendering over the internet.
There also are community patches and renderers for Unreal Tournament... I'll expand my topic about it later, I'm at school atm :P

Thanks for the support Firek and Duke Nico, this has been something of a problem for me for some time, I will check out the 227.e patch and also keep an eye out for the support article, hope the team can work something out!

I had actually found a really interesting solution to this problem that involved writing a quick program that purposefully got itself stuck in an infinite loop so as to force the processor to run at the full speed. I have yet to have the time to test it out but it does make my processor stay at it's full speed so in all theory it should work.

That's the solution used by Quake 3! And it works damn fine.

Er, this may or may not help, but I'm running on a 3+ Ghz quadcore with no issues, and I'm not using processor affinity or anything like that? I am running the updated OpenGL renderer which appears to still be in development here. (http://cwdohnal.home.mindspring.com/utglr/) Looks great, might want to try that.

hi, I have the reverse problem in Unreal gold: the speed of the game is super-fast! How can I turn down to a normal speed? I use an amd dual core

AMD released a patch for the dual core systems for issues like yours. Grab it, it might be useful to some other games!

I tried setting my power settings to high performance, and it does work briefly, but then the game slows back down to a crawl for like a minute before speeding back up again. Thoughts?

Maybe slightlly unrelated, but im running the demo for both unreal gold and unreal tournament goty with opengl renderer, and having no problems on win xp sp3, with no extra tweaks. The direct3d renderer is really crappy, avoid it, use opengl instead.

Would this be on a laptop? I've had the same problem with Hitman: Codename 47 on a laptop, allegedly due to some sort of power saving mode which messes with the CPU tick.

I had the same issue. The suggested fix by Firek worked for a one and a half rounds. My current fix is playing in windowed mode (press F12). Your resolution can still be adjusted as needed. It doesn't bother me.
Good luck!

I created an unoffical patch for this.
Information about it is in this thread:
http://www.gog.com/en/forum/unreal_series/unreal_tournament_amp_039_99_unofficial_multi_core_fix
you can grab it here:
http://files.filefront.com/UT+99+Multi+Core+Fix/;13764923;/fileinfo.html
hope it helps
hip63