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rFactor:strange problem with framerate?



 
 
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  #1  
Old September 12th 05, 06:33 PM
Arto Wikla
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Default rFactor:strange problem with framerate?

I have a strange framerate problem in rFactor:
Generally everything is very smooth, but every now and then
it becomes nearly a slide show, perhaps about 2-3 times during
one lap.

I have tried different resolutions and different amounts of
details - both nearly from top to minimum. These changes seem
not to have any effect to the problem! Quite strange! Is this
a commonly known problem? Any advice?

My system is:

Radeon 9600 XT-4
driver version 6.14.10.6414

Intel Pentium 4 3.20GHz

Thanks in advance!

Arto
--

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  #2  
Old September 12th 05, 08:41 PM
Alan Bernardo
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"Arto Wikla" > wrote in message
news:[email protected]
>I have a strange framerate problem in rFactor:
> Generally everything is very smooth, but every now and then
> it becomes nearly a slide show, perhaps about 2-3 times during
> one lap.
>
> I have tried different resolutions and different amounts of
> details - both nearly from top to minimum. These changes seem
> not to have any effect to the problem! Quite strange! Is this
> a commonly known problem? Any advice?
>
> My system is:
>
> Radeon 9600 XT-4
> driver version 6.14.10.6414
>
> Intel Pentium 4 3.20GHz
>
> Thanks in advance!
>
> Arto
> --
>


Try changing the shaders to something other than you currently use. I know
with my system (high low-ended, I guess) I use DX7 for shaders for the best
performance. You might also check for background programs running,
especially virus programs. Try and empty out all unnecessary programs,
using maybe EnditAll 2, and then bring them back one by one, if the problem
was solved through emptying. Also, fiddle a bit with the sound and try
turning vsync on or off, etc.

You could also try different video drivers. I know I have a nVidia 5700
card and the best drivers for me are the 78.03s.

Alanb


  #4  
Old September 13th 05, 06:16 AM
Mr Q
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Default

I had a similar problem when using FSAA. Every time I got near more than
a couple of AI cars the frame rate would drop to under 10 fps. This
would happen even if I couldn't see the cars (eg. when I was driving
past the pit lane and the cars were hidden behind the pit wall).

Turning off FSAA fixed it, even if it isn't quite as pretty.

Mr Q
-------------------


> (Arto Wikla) wrote in news:wikla.1126545798
> @wrl-55:
>
>
>>I have a strange framerate problem in rFactor:
>>Generally everything is very smooth, but every now and then
>>it becomes nearly a slide show, perhaps about 2-3 times during
>>one lap.
>>
>>I have tried different resolutions and different amounts of
>>details - both nearly from top to minimum. These changes seem
>>not to have any effect to the problem! Quite strange! Is this
>>a commonly known problem? Any advice?
>>
>>My system is:
>>
>>Radeon 9600 XT-4
>>driver version 6.14.10.6414
>>
>>Intel Pentium 4 3.20GHz
>>
>>Thanks in advance!
>>
>>Arto

  #5  
Old September 13th 05, 01:18 PM
Sim Racer
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Default

"Arto Wikla" > wrote in message
news:[email protected]
>I have a strange framerate problem in rFactor:
> Generally everything is very smooth, but every now and then
> it becomes nearly a slide show, perhaps about 2-3 times during
> one lap.
>
> I have tried different resolutions and different amounts of
> details - both nearly from top to minimum. These changes seem
> not to have any effect to the problem! Quite strange! Is this
> a commonly known problem? Any advice?
>
> My system is:
>
> Radeon 9600 XT-4
> driver version 6.14.10.6414
>
> Intel Pentium 4 3.20GHz
>
> Thanks in advance!
>
> Arto
> --



I had the same problem occur when fiddling with graphics options, when I
changed AGP Aperture (in BIOS) from 128Mb to 32Mb. Turned in back up to
256Mb and problem disappears.

Hope that helps.

Ade.


  #6  
Old September 13th 05, 03:01 PM
Byron Forbes
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Default


"Arto Wikla" > wrote in message
news:[email protected]
>I have a strange framerate problem in rFactor:
> Generally everything is very smooth, but every now and then
> it becomes nearly a slide show, perhaps about 2-3 times during
> one lap.
>
> I have tried different resolutions and different amounts of
> details - both nearly from top to minimum. These changes seem
> not to have any effect to the problem! Quite strange! Is this
> a commonly known problem? Any advice?
>
> My system is:
>
> Radeon 9600 XT-4
> driver version 6.14.10.6414
>
> Intel Pentium 4 3.20GHz
>


Step 1 - turn down drawn opponents. This is especially critical in this
sim since all the cars are in the pits even when the driver isn't in it so
passing the pits can cause big probs as can any time when a lot of cars are
in view. Got mine set to 8.


  #7  
Old September 14th 05, 07:33 AM
Arto Wikla
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Thanks Alanb, dave henrie, Mr Q, Ade and Byron Forbes,

your advice helped and now rFactor is running quite smoothly.

I list below what I did and what I did not.
Perhaps this list may help others, too? As some kind of remainder?

(My system is Radeon 9600 XT-4, Pentium 4 3.20GHz 1024MB)

1) I chose the "DX7 (performance)". Not too ugly.
2) I did not stop _all_ the other the programs, but I
stopped nearly all the programs started by me: browser
windows etc. I think 1024MB memory is enough, when unnecessary
programs are stopped.
3) vsync is off.
4) I did not update the video drivers.
5) I did not lock down the swap file.
6) I set the shadows off. Not too big loss of immersion.
7) I did not dare to touch the FSAA.
8) The passing hidden AI cars near the pit lane really
seemed to be often the place where fps's dropped!
Strange: does the program draw also hidden objects?
See comment 10 below.
9) I did not dare to touch the AGP Aperture settings in BIOS.
10) I turned down to 8 the number of opponents drawn. It would be
nice to be able to set that asymmetrically: more cars drawn in
front of you than behind. Now with the setting 8 the popping cars
in front of you is a little disturbing... I must try something
like 10-12?

There are so many combinations of settings that it is really complicated
to test, which changes had biggest effects...

BTW: Is there any easy way to see the fps's in rFactor, like alt-F?
BTW2: To me rFactor looks promising. After GPL there has been so many
disappointments...

Thanks again guys! :-)

Arto

--

  #8  
Old September 14th 05, 07:58 AM
Steve Whitty
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"Arto Wikla" <wrote in message

> BTW: Is there any easy way to see the fps's in rFactor, like alt-F?


nearly had it right

try ctrl-F

cheers

steve


  #9  
Old September 14th 05, 01:07 PM
Byron Forbes
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Default


"Arto Wikla" > wrote in message
news:[email protected]

> BTW2: To me rFactor looks promising. After GPL there has been so many
> disappointments...
>


and I *think* finally we have something without "Papyrus" on it that is
worth the purchase!


  #10  
Old September 14th 05, 02:13 PM
[email protected]
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Hi Arto,

Glad to hear you have made some progress on eliminating the FPS issues.
Note that I am running 20 visible cars, with shadows set to high and
DX9 mode, and I do not have noticable FPS slowdowns. My system specs
are slightly less than yours (AMD XP2500, 512mb, Radeon 9600). On my
system rFactor seems to run quite a bit smoother (with similar
settings) then GTR and GTL. I was quite surprised that I could run in
DX9 mode with decent FPS.

I think you should make changes one at a time to see their effects.
I'm guessing some of the things you did helped, while otheres may be
competely unnecessary.

Good luck!
-Pat

 




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