This FAQ is for those having trouble getting good performance on their hardware while running TK. I touch briefly on this in the user manual recommending the minimum following specification;
Dual Core 2.4GHz+ AMD or Intel CPU
1GB GTX460 (850MHz core + versions) or better
Latest DirectX, Graphics & Sound drivers
If your system does not meet this minimum requirement then there are some things you can do to improve performance without hurting the visual experience in any significant way.
If you are using the included user.ltx file (and why wouldn't you? its a large part of the visuals) here is what you can do to improve FPS;
- Disable Global Illumination
Open user.ltx in notepad and look for r2_gi, change on to off.
- Change r__detail_density
Controls the grass density in TK. Raising this value above 0.12 will thin out the grass. Try settings of 0.15, 0.18 and 0.20.
Do not use the xrRender_R2.dll file included in the bin folder. This file has vastly increased grass draw distance and will have a heavy impact on FPS if your system does not at least meet the minimum requirements.
Stalker likes a page file, even if you have lots of physical RAM. Set your page file parameters to 512 minimum / 2048 maximum. You should restart your system after making these changes.
Often overlooked, a fragmented HDD will cause a lot of system slowdown. The built in Windows defrag utility is crap so don't bother with that, instead download a HDD defrag utility called Diskeeper and use that.
If none of the above gains you enough FPS, then its time to consider overclocking your CPU, RAM & GPU. X-Ray is a system intensive engine not just GPU intensive, as such overclocking CPU & RAM can have as big of a impact as overclocking your GPU or bigger (depending how good your GPU is)
Well, thats some very straightforward ways to increase FPS in TK without hurting the visuals too much. As a final note, also remember to check things such as AA & AF settings in your graphics card control panel.