My system is a winxp 32bit, core 2 duo cpu, 2gigs of ram, 8800GT gpu.
If you have a multi core CPU, you can gain a lot from this. If you dont, then unfortunately guide cant help you.
First I got the multi threaded build from the downloads page. Direct link to latest at time of posting: http://planetspring.free.fr/spring/exec ... b45722.zip
Now before you install this, launch your favorite mod, and disable FPSManager and LUPSManager widgets.
Then back up your old spring.exe, and replace it with multi threaded version.
Next, you must turn off threaded optimization. If you use Nvidia, you can do this like so:
If you cant select the spring executable in the drop down box of step 1, then press add and browse to spring.exe.
All thats left is to play spring and enjoy the huge performance boost.
I can now patrol 3000 core vamp fighters before my cpu starts to slow down, and even so I get 20 fps when all the fighters are visible, and 80 fps when they are not on screen at 1920*1200 resolution, 4096 shadows, and almost everything else turned to max.
Oddly enough, the healthbars widget, with so many units on screen, eats almost 30% of my fps.
Your results may vary, for some people the MT build doesnt work, but its sure as hell worth a shot!