I was trying to find a mod that disables shadows, and came across the shadow jitter-fix mod.

I was able to modify it to disable shadows entirely.
This has given me a massive performance boost, now I can run the game on Max settings without lag whereas previously I'd get some lag on Min settings.

Thanks to the creator of the shadow jitter-fix mod for making this possible, since I wouldn't have been able to do this without that mod.

Instruction:
-Download config.rar from link above
-Extract to Program Files(x86)SteamSteamAppscommonstate of decayEngine
-The folder Config will now be inside the Engine folder, if done correctly

I've noticed when re-downloading my own mod that there is a config folder within
a config file.. make sure you're placing the config file that contains cvargroups into
the Engine folder, and not the config folder that contains another config folder.

Let me know if there's any problems
Enjoy!

Vincent