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6800GT fps wierdness

L

Lloyd++

n00b
Joined
Aug 4, 2004
Messages
27
I just got my 6800GT today, and Doom3 looks amazing, but along with an odd texture detail setting phenomenon I have described below, I'm not getting consistant framerates anywhere near those shown in the Doom3 [H]ardware guide benchmarks with respect to my system.

At 1600x1200 high quality with no AA, I manage a 55-60 fps when theres not too much on the screen, but whenever I back up into a corner of a small room and look accross it, it drops to 30 and stays there as if it were capped at 30. It happens in the reception room you first walk into at the beginning of the game, for example.

Also, sometims if I turn my view just a few degrees to the side, the fps jumps back up to 60, but of course, when I turn back to where I was looking before, down to 30 again. It's like there are certain bad spots that I cant look at without my fps being cut exactly in half. It seems completely random as well, it doesn't matter if there are lots of lights or effects all going on at once... It's like I could paint random polka-dot blotches on the walls that tell me where my fps will be cut exactly in half if I point my crosshairs at them.

Furthermore, I noticed that if I look at one of these 'bad spots', and then go into options, set the texture quality to medium, and then return directly back into the game WITHOUT RESTARTING to let the settings take effect, then that 30 fps drop disappears, and I can actually look at anything in that particular room and maintain 60, that is untill I walk into the next room. I am able to reproduce this anywhere.

Why would changing the texture detail setting without restarting have any impact on my FPS?

My system specs are below. Any help would be greatly appreciated. Thanks.

Windows XP SP1
Athlon 64 3000+
512MB PC2400
PNY GeForce 6800 GT
MSI K8T
 
OK so a response to a similar problem linked to a tweak guide that reccommended 1 gig of ram for high quality in doom3. I only have 512, so I figured thats the problem right? Wrong!

The HardOCP Guide guide says so!

In my benchmarks, I'm only getting 46 fps. With the same settings and equivalent hardware, Kyle got 56. What is different? I've gone through every tweak I can find, and still no change. What could I possibly be doing wrong?

The only thing I can think of is the fact that my ram is only PC2400.

Would upgrading from 333MHz RAM to 400MHz RAM make a 10 fps difference?
 
Disabling vsync will fix those drops to 30fps, this wouldn't be a problem if we could enable Triple Buffering in Doom 3 somehow ... I decided to play through it without vsync and just set my refresh higher to minimize tearing (1600x1200 @ 100hz) , the framerate remained 50-60fps the majority of the time regardless of what was going on.
 
i had aproblem almost like this with fraps yesterday where after 1 quickload my fps would move from 60-30 then i relized i had the fraps vid capture hotkey same as quickload hotkey. and that whole time iw as recording video..

how cool is that. do you have your cpu overclocked at all? if your aircooling it may be throttling down sparatically just to fork with you
 
I appreciate the suggestions, but still no dice. jrw, when I read your responce, I thought oh, that has to be it, but no, turning vsync off made almost no difference, which leads me to think that there is a deeper underlying performance issue here.

I'm trying to narrow this down to see if its a system issue, or just a doom3 issue. Does this look right for my particular system's specs?

3dmark.JPG


If so, then I don't understand why my fps isn't even in the same ballpark as those achieved in the hardware guide at 1600x1200, no AA, vsync turned off:

timedemo.JPG
 
Im having the same problems, Athlon 64 3400+ 1MB L2 cache /w 1 gig of corsair xms 2700, 80 gig 7200 rpm WD hardrive, Leadtek 6800GT, MSI K8T and an Audigy. In the starting room on Doom3 I get about 20-30 fps, and in the bioscan room i get about 40 fps and 20 fps when the lady walks through the door....I have no idea how to fix it
 
Matrix187, apparently we have the same motherboard and CPU...

I wonder if there is anyone else with the K8T and an AMD64 proc are having these problems.
 
Maybe the ram you're using is holding it back, Did you run doom 3 timedemo twice in a row? The first run is always lower because of the frequent pauses.. other than that not sure :confused: ,Im running 61.77 drivers on my 6800GT and getting 11,490 3dmarks and 58 fps Doom 3 timedemo 1600x1200 High quality No AA ,Vsync off.
 
Yea, I get 12k in 3dmark, but in doom my fps blows. Yes I know about the 2nd time =)
 
To get rid of the pauses the first time you're running the timedemo use the command, "timedemo demo1 1" This enables pre-caching for the timedemo so you'll get the same results as if you were to run the timedemo for the second time, but on the first time. It'll eliminate the erroneous scores and you won't need to sit through the timedemo twice to benchmark correctly.

I'm running a P4 at 3.2 GHz (2.4HT, 875P, 1gig ram 1:1) with a GT at 435/1150 and I'm getting similar problems with the "30FPS" cap as well, I don't think this is an AMD platform only problem. I turned off v-sync and the 30FPS cap seems to be gone, but then the tearing sucks. Unfortunately my VP201b LCD monitor won't let me have refresh rates like 100Hz at 1600x1200.

I heard that disabling shadows and whatnot, can give steadier framerates, but that's not what we paid for. :confused:
 
I had the exact same problem. A guy in FM forums told me this and it fixed it completely

Your refreshrate is 60Hz by default, the Framerate cap is 60FPS btw.
If your computer can't manage the 60FPS it will lower to exactly 50% of that, meaning: 30FPS until it can manage 60FPS again.
It's anoying indeed.

Solution:
-Create a file called 'autoexec.cfg' in the DOOM3\base directory
-Add the following lines:
seta r_displayrefresh 85
seta r_swapinterval 0

This should get rid of the tearing and give you a much smoother expierence
 
I'm not too familiar with the scale of 3dmark tests, so can someone tell me if a score of 10428 seems normal? I've been seeng 6800GT users commonly getting scores of 11k and 12k. How significant is a 500-1500 point difference?

And same as Matrix187, turning off vsync and fixing the refresh rate did improve things, but I'm still not getting performance anywhere near what is illustrated in the online benchmarks.
 
I believe I used the VIA 4 in 1's and installed everything at once, and my version is 4.51 the latest. My 3dmark03 score is 12k, so its some bug with doom 3
 
Ok, im extremely pissed off at this bug. It seems I should just return the card and get an ATI card to fix this problem.... Any more suggestions? I have paid about $430 for my 6800 gt, and have had it for a couple weeks and it works like crap in doom3.
 
Matrix187 said:
Im having the same problems, Athlon 64 3400+ 1MB L2 cache /w 1 gig of corsair xms 2700, 80 gig 7200 rpm WD hardrive, Leadtek 6800GT, MSI K8T and an Audigy. In the starting room on Doom3 I get about 20-30 fps, and in the bioscan room i get about 40 fps and 20 fps when the lady walks through the door....I have no idea how to fix it
Click to expand...


whow i have simailr set up but i never drop below 60+

a64@.2.6/ 6800gt /1gig/ 1280/ 61.77
4xaa 4xaf

i know i could turn stuff up more. but i hate it when it drops to like 30+ fps when alot of enemies come in room. thats when i want the frame rate the smoothest. plus 1280 game looks amazing.

my point. you def are having a prob
 
have you tried a clean windows install. alot of driver shifting around can really make windows act funny.
 
Ive reinstalled windows plenty of times trying to fix this problem. =( I can just RMA the card, but if I get 12k in 3dmark 03 and 700+Fps in Call Of Duty like before it shouldnt be the card.
 
jrw said:
Disabling vsync will fix those drops to 30fps, this wouldn't be a problem if we could enable Triple Buffering in Doom 3 somehow ... I decided to play through it without vsync and just set my refresh higher to minimize tearing (1600x1200 @ 100hz) , the framerate remained 50-60fps the majority of the time regardless of what was going on.
Click to expand...

The tweaking program NVHard Page 2.0 supports Tripple Buffering for OGL. But yes, some of you guys seem to have really low D3 scores. My Oced GT manages to get around 74FPS at 16x12 High noAA.
 
Its only since I reinstalled windows this problem has occured, so its impossible to be the card. Ive went through the reinstall process perfectly, getting all the drivers in the right order etc. I used to get about 100 fps on 1024/768 High Quality with everything on besides AA/AF timedemos on doom3. My 3dmark is 12k still like before the reinstall, so its something with doom 3.
 
[edited]
The multiplayer performance is bad, but it's odd in that I get about the same peformance at any detail level. From low quality 640x480 everything off to high quality 1280x1024 everything on, I get a stable 60 when nothings happeining, but if I shoot the chaingun or if someone is on my screen, it drops to 40. Any combination of these makes causes an even bigger drop. I get at most 40-50 fps when anything is going on, and if I'm chasing someone with a rocket launcher or whatever, it stays below 30. Like I said before, dropping my quality has no effect on these drops.

Is multiplayer supposed to be this crappy? Can anyone get a stable 50-60 in a multiplayer game?
 
Matrix187 said:
Its only since I reinstalled windows this problem has occured, so its impossible to be the card. Ive went through the reinstall process perfectly, getting all the drivers in the right order etc. I used to get about 100 fps on 1024/768 High Quality with everything on besides AA/AF timedemos on doom3. My 3dmark is 12k still like before the reinstall, so its something with doom 3.
Click to expand...

What did you do after your latest install? Did you do a windowsupdate?

What made you reinstall windows in the first place?
 
I've had the exact same problem ever since I got Doom 3, and I have a FX 5900XT. I fixed it by rolling my drivers all the way back to 56.72.

I used to get FPS at around 60+, but whenever a certain texture or effect (often fire) would come on screen I would drop to about 15 FPS. It also happened in certain rooms, and looking at certain walls.

I was using 61.77, and having that problem, then going back to 56.72 solved it.

I don't know if that'll help you, but I'm pretty sure we were having the same problem.
 
The 56.72 drivers won't work for me because they have no support for 6800 cards.
 
http://www.viperlair.com/articles/howto/software/tweakd3/

try using some of these tweaks for doom 3. i was having some "difficulty" trying to play the game at 1280x1024 and then someone posted this site a couple weeks back and i implemented some of these tweaks and they have helped a lot. by default doom 3 will see any videocard as a 64mb card and has caching of files disabled. these are just a few changes that add performance to the game without IQ degrading.
 
jrw said:
Maybe the ram you're using is holding it back, Did you run doom 3 timedemo twice in a row? The first run is always lower because of the frequent pauses.. other than that not sure :confused: ,Im running 61.77 drivers on my 6800GT and getting 11,490 3dmarks and 58 fps Doom 3 timedemo 1600x1200 High quality No AA ,Vsync off.
Click to expand...

I need to check mine out when I get home. I have very similar specs to your machine.
 
Matrix187 said:
Ok, im extremely pissed off at this bug. It seems I should just return the card and get an ATI card to fix this problem.... Any more suggestions? I have paid about $430 for my 6800 gt, and have had it for a couple weeks and it works like crap in doom3.
Click to expand...

The X800's get crap frame rates in Doom 3. I know I've got both an X800Pro and a 6800GT.
 
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