Doom 3 refresh fixed at 60 Hz... why?

[Guest]

Archived from groups: alt.games.doom (More info?)

Athlon 64 3000+
Radeon 9800 Pro
1 GB RAM

Doom 3: High detail settings, no antialias, 4X anisotropic filtering,
and the "Humus" Doom 3 fix for Radeon card performance. On timedemo
with Video Sync activated, I get 35 fps.

Without the video Sync, the timedemo is actually 47 fps.
Unfortunately, the game suffers from severe texture tearing without
Vsync. It's practically unplayable without it.

I managed to alleviate this problem by fixing the refresh rate at 85Hz
instead of the default 60 Hz. Needless to say, the texture tearing is
virtually gone and I could play at 47 fps. That's quite a jump from 35
fps.

So my question: Are there any drawbacks (in singleplayer games) to
setting the refresh rate at 85 Hz instead of the default 60 Hz?
Surely, there's a reason why Id Software chose 60 Hz. I read somewhere
that game physics could possibly be screwed up as a result of
overriding the default refresh rate.

 

[Guest]

Archived from groups: alt.games.doom (More info?)

On 10/4/2004 9:46 PM opticreep@yahoo.com brightened our day with:

>Athlon 64 3000+
>Radeon 9800 Pro
>1 GB RAM
>
>Doom 3: High detail settings, no antialias, 4X anisotropic filtering,
>and the "Humus" Doom 3 fix for Radeon card performance. On timedemo
>with Video Sync activated, I get 35 fps.
>
>Without the video Sync, the timedemo is actually 47 fps.
>Unfortunately, the game suffers from severe texture tearing without
>Vsync. It's practically unplayable without it.
>
>I managed to alleviate this problem by fixing the refresh rate at 85Hz
>instead of the default 60 Hz. Needless to say, the texture tearing is
>virtually gone and I could play at 47 fps. That's quite a jump from 35
>fps.
>
>So my question: Are there any drawbacks (in singleplayer games) to
>setting the refresh rate at 85 Hz instead of the default 60 Hz?
>Surely, there's a reason why Id Software chose 60 Hz. I read somewhere
>that game physics could possibly be screwed up as a result of
>overriding the default refresh rate.
>
>
>
Doom 3 has a frame rate cap of 60 fps, this has nothing to do with the
refresh rate which can be set at anything and has no effect on the game,
just your eyes. Windows XP defaults to having your monitor refresh at
60 Hz, and you have to do something to get around this.

You've got to turn triple buffering on and force refresh rates via the
Radeon control panel. What you should do is get the latest Omega
drivers, http://www.omegadrivers.net/ati.php, they've got the best
performance for Doom 3 so far. Included is Radlinker you can turn
triple buffering on with it as well, here's a quick explanation of what
Radlinker does: http://inglostadt.com/rad.htm

If you're really unfamiliar with this stuff do a search around on google
for Triple Buffering, there are lots of good explanations for what it
does and how it affects VSync.

--
"...forged but accurate."

Steve ¤»Inglo«¤
www.inglostadt.com

 

[shawk]

Archived from groups: alt.games.doom (More info?)

"Inglo" <ioo@??.¿¿¿> wrote in message
news:lmx8d.24345$QJ3.13898@newssvr21.news.prodigy.com...
> On 10/4/2004 9:46 PM opticreep@yahoo.com brightened our day with:
>
>>Athlon 64 3000+
>>Radeon 9800 Pro
>>1 GB RAM
>>
>>Doom 3: High detail settings, no antialias, 4X anisotropic filtering,
>>and the "Humus" Doom 3 fix for Radeon card performance. On timedemo
>>with Video Sync activated, I get 35 fps.
>>
>>Without the video Sync, the timedemo is actually 47 fps.
>>Unfortunately, the game suffers from severe texture tearing without
>>Vsync. It's practically unplayable without it.
>>
>>I managed to alleviate this problem by fixing the refresh rate at 85Hz
>>instead of the default 60 Hz. Needless to say, the texture tearing is
>>virtually gone and I could play at 47 fps. That's quite a jump from 35
>>fps.
>>
>>So my question: Are there any drawbacks (in singleplayer games) to
>>setting the refresh rate at 85 Hz instead of the default 60 Hz?
>>Surely, there's a reason why Id Software chose 60 Hz. I read somewhere
>>that game physics could possibly be screwed up as a result of
>>overriding the default refresh rate.
>>
>>
> Doom 3 has a frame rate cap of 60 fps, this has nothing to do with the
> refresh rate which can be set at anything and has no effect on the game,
> just your eyes. Windows XP defaults to having your monitor refresh at 60
> Hz, and you have to do something to get around this.
>
> You've got to turn triple buffering on and force refresh rates via the
> Radeon control panel. What you should do is get the latest Omega drivers,
> http://www.omegadrivers.net/ati.php, they've got the best performance for
> Doom 3 so far. Included is Radlinker you can turn triple buffering on
> with it as well, here's a quick explanation of what Radlinker does:
> http://inglostadt.com/rad.htm
>
> If you're really unfamiliar with this stuff do a search around on google
> for Triple Buffering, there are lots of good explanations for what it does
> and how it affects VSync.
>
> --
> "...forged but accurate."
>
> Steve ¤»Inglo«¤
> www.inglostadt.com

As per Steve but you might also go into the 'doomconfig.cfg' file in the
'base' folder and change the 8 to 1 or 2 in 'seta image_anisotropy "8"'
This will really help those frame rates. It's the only tweak I use with a
9800Pro and a Barton XP2800..... and those Omega's ARE pretty good. Shaun