• GeForce 8800 flickering issue

Page 1 of 1

GeForce 8800 flickering issue

Posted: Mon Dec 22, 2008 10:09 am

by Gunner

Split topic from private thread.

Lawndart wrote:What's up with the flickering you see on the jets in your capture? I don't see the white sections flicker between the fuselage and wings, gear doors and belly etc. in my LockOn... (Check your 'forced' NVIDIA settings possibly).

I thought that was a "Lock-On ism". Not nearly as bad with the new model, but I've always had it. I use the following settings, with everything maxed in Lock-on 'cept shadows.

Anisotropic filtering................................................2x
Antialiasing - Gamma Correction............................On
Antialiasing - Mode...............................................Override any application setting
Antialiasing - Setting...........................................16xQ
Antialiasing - Transparency..................................Off
Conformant texture clamp...................................Use hardware
Extension limit......................................................Off
Force mipmaps.....................................................None
Multi-display/mixed-GPU acceleration....................single display performance mode
Stereo - Display mode.........................................Use vertical interlace monitor
Texture filtering - Anisotropic sample optimization...On
Texture filtering - Negative LOD bias...................... Allow
Texture filtering - Quality..........................................Quality
Texture filtering - Trilinear optimization...................Off
Triple buffering........................................................Off
Vertical sync........................................................Use the 3D application setting

Any ideas?

Posted: Mon Dec 22, 2008 12:00 pm

by Lawndart

I can't reference any of my settings until I get back home, but right away I'd try changing the AA setting from "16xQ" to "16x" (or even "8x"). Q-modes are arguably better, but come with some side-effects, and if nothing else a hefty performance hit too. Also, you could bump up your AF to a higher number, although that likely has nothing to do with the flickering effect. The other ones that stand out in my mind to play around with are: 1) Force mipmaps; 2) Antialiasing - Transparency and; 3) Texture filtering - Trilinear optimization.

nvnews.net boards: What is the difference between 16x and 16xQ AA?

Also, there seems to be a known flickering issue with shadows/reflections on some 8800 cards (Ultra)? Just Google: "8800 flicker", and you'll find a ton of problems and some potential solutions. With my 8800GT I don't see hardly any flickering, although this may be an issue with select 8-series cards. I'll be sure to post my settings when I get a chance though.

Posted: Fri Dec 26, 2008 12:01 pm

by Redeye

I'm not sure if these settings are correct but....bold font are different from Gunners settings.
Here is my settings:

Anisotropic filtering................................................8x
Antialiasing - Gamma Correction............................On
Antialiasing - Mode...............................................Override any application setting
Antialiasing - Setting...........................................4x
Antialiasing - Transparency..................................Multisampling
Conformant texture clamp...................................Use hardware
Error reporting....................................................Off
Extension limit......................................................Off
Force mipmaps.....................................................None
Multi-display/mixed-GPU acceleration....................single display performance mode

Texture filtering - Anisotropic sample optimization...Off
Texture filtering - Negative LOD bias...................... Clamp
Texture filtering - Quality..........................................Quality
Texture filtering - Trilinear optimization...................Off
Threaded optimization...........................................On
Triple buffering.....................................................Off
Vertical sync........................................................Use the 3D application setting

Posted: Fri Dec 26, 2008 12:22 pm

by Gunner

Thanks Red! I think I've tried about every combination there is, but I haven't tried reducing antialiasing - I have switched to 16x, & raised Anisotropic to 8x, but it seems everything I've tried so far gives me the same result.

Posted: Fri Dec 26, 2008 5:15 pm

by Thumper

Do you use LOCFG to configure LockOn? If so you may try setting all of your "clipping" settings back to the defaults.

Posted: Fri Dec 26, 2008 5:27 pm

by Lawndart

Good idea Thumper. Also, looks like Redeye is using an older set of drivers judging by the options he has.

Here are my settings for LockOn under NVIDIA settings. ( I have driver version 180.48 ).

Anisotropic filtering..............................................16x
Antialiasing - Gamma Correction...........................On
Antialiasing - Mode...............................................Override any application setting
Antialiasing - Setting............................................16x
Antialiasing - Transparency..................................Off
Conformant texture clamp....................................Use hardware
Extension limit......................................................Off
Force mipmaps......................................................None
Maximum Pre-rendered frames.............................3
Multi-display/mixed-GPU acceleration...................Multiple display performance mode

Texture filtering - Anisotropic sample optimization.....Off
Texture filtering - Negative LOD bias..........................Clamp
Texture filtering - Quality............................................Quality
Texture filtering - Trilinear optimization......................On
Triple buffering...........................................................Off
Texture filering - Anisotropic mip filer optimization.....Off
Vertical sync...............................................................Use the 3D application setting

And here's the "clipping part" of my graphics.cfg for reference, should you need it:

Code: Select all

Camera
{
    current = "High";
    Low
    {
        near_clip = 4;
        far_clip = 60000;
        structures = {30, 2000};
        trees = {60000, 3000};
        dynamic = {300, 20000};
        objects = {3000, 40000};
        mirage = {3000, 10000};
        surface = {10000, 50000};
        lights = {50, 10000};
        lod = 0.7;
    }
    Medium
    {
        near_clip = 0.2;
        middle_clip = 4;
        far_clip = 80000;
        structures = {40, 5000};
        trees = {100000, 8000};
        dynamic = {300, 20000};
        objects = {3000, 50000};
        mirage = {3000, 15000};
        surface = {14000, 80000};
        lights = {100, 30000};
        lod = 1;
    }
    High
    {
        near_clip = 0.2;
        middle_clip = 4;
        far_clip = 80000;
        structures = {200, 10000};
        trees = {200000, 15000};
        dynamic = {300, 20000};
        objects = {5000, 80000};
        mirage = {5000, 20000};
        surface = {20000, 80000};
        lights = {200, 80000};
        lod = 1.5;
    }
}

Posted: Sat Dec 27, 2008 12:37 pm

by Redeye

How do I update my drivers to 180.48... brain fart...!

Posted: Sat Dec 27, 2008 2:15 pm

by Lawndart

Go to www.nvidia.com and follow the links for download drivers. You just pick your card and OS in the drop-down menus.

Posted: Sat Dec 27, 2008 8:13 pm

by Talon

Drivers seem to do the trick for me when I had my 8800 running. One time, for some reason, I had to uninstall the previous nvidia drivers since the flickering wouldn't go away, then reload the drivers and then they were gone.

I am currently running an Nvidia GTX280 1Gb and so far (knocks on wood) haven't had any problems yet.

Posted: Sat Dec 27, 2008 10:00 pm

by Thumper

Gunner, my clipping settings are identical...

Posted: Sun Dec 28, 2008 12:35 am

by Lawndart

Talon wrote:Drivers seem to do the trick for me when I had my 8800 running. One time, for some reason, I had to uninstall the previous nvidia drivers since the flickering wouldn't go away, then reload the drivers and then they were gone.

It's usually a good idea to uninstall, then run a "detonator, cleaner, sweeper" -type program, before re-installing (new) graphics drivers. Leftovers can cause problems. Here is a program from Guru3D.com:

Guru3D - Driver Sweeper (Setup)
Guru3D - Driver Sweeper (no installer)