rec.autos.simulators

N4:Video problems in long races

Vintoo

N4:Video problems in long races

by Vintoo » Sat, 28 Apr 2001 11:01:30

I'm running a 50% season and I've come across something odd. First things
first:


An eVGA Gforce2MX 32mb video card and windows ME with directx8a.

I run OpenGL at 1024/768 and get around 38-40 fps at the start of a race at
Daytona. At the end of the race I am getting 17-20 fps. The race was all
green and no wrecks so everyone's car was clean. I've noticed this at other
tracks too, the longer I race the lower the fps goes. Towards the end of
races it starts to turn into a slideshow and really gets hard to race. Could
this be video memory getting degraded over time? If so would drivers be the
culprit?

Anyone else experience this?

Vintook

Don Burnett

N4:Video problems in long races

by Don Burnett » Sat, 28 Apr 2001 11:54:52

Sounds like you may be getting a lot of hard drive activity as the replay
buffer gets fuller. You have a lot of ram, so obviously it is probably
allocating a good bit of memory to the replay buffer. I believe you can
override this value and change it, you might want to play with that value
and see if you get better results - either up or down. Check out the readme
on adjusting the replay buffer.
Fwiw, I have the same setup as yourself, ( mb, chip, vid card), and get
simlar fps at the start of a race ( full field), but it does not degrade
over time except during accidents. It then comes back up though.  I have 256
mb of ram.
Another thought - what about your windows swap file? Do you let windows
manage it? If so, might try setting to to a seperate partition, preferable
by itself. I have mine set to 2.5 times the amount of ram I have, and it
works very well.

--
Don Burnette
D Burnette in N4

Some people do nothing wrong.
The problem is, they do nothing.
And THAT is wrong.


> I'm running a 50% season and I've come across something odd. First things
> first:


> An eVGA Gforce2MX 32mb video card and windows ME with directx8a.

> I run OpenGL at 1024/768 and get around 38-40 fps at the start of a race
at
> Daytona. At the end of the race I am getting 17-20 fps. The race was all
> green and no wrecks so everyone's car was clean. I've noticed this at
other
> tracks too, the longer I race the lower the fps goes. Towards the end of
> races it starts to turn into a slideshow and really gets hard to race.
Could
> this be video memory getting degraded over time? If so would drivers be
the
> culprit?

> Anyone else experience this?

> Vintook

Larr

N4:Video problems in long races

by Larr » Sat, 28 Apr 2001 22:51:06

It almost sounds like your system is running low on resources.

Try this.  Reboot, and immediately record your free resources.

Then, go do a race.  At the end of the race, check the resources again and
see if they have dropped aggressivly.

If they have, then Papy will need to know about this.

-Larry


> I'm running a 50% season and I've come across something odd. First things
> first:


> An eVGA Gforce2MX 32mb video card and windows ME with directx8a.

> I run OpenGL at 1024/768 and get around 38-40 fps at the start of a race
at
> Daytona. At the end of the race I am getting 17-20 fps. The race was all
> green and no wrecks so everyone's car was clean. I've noticed this at
other
> tracks too, the longer I race the lower the fps goes. Towards the end of
> races it starts to turn into a slideshow and really gets hard to race.
Could
> this be video memory getting degraded over time? If so would drivers be
the
> culprit?

> Anyone else experience this?

> Vintook


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