**If you've been living under a rock and not playing on the modded version of C2, download it here, then proceed with these steps below**
I literally never experience lag now after stumbling upon enabling UAC Virtualization in task manager. This and all other things I do to optimize the performance of the game are listed below:
1) Every time you launch the game you need to do the following:
2) To further increase the game's performance I recommend closing all browsers and other applications.
3) Determine if Fullscreen or Windowed mode performs better for you.
4) If you are playing on a laptop make sure it is set for best performance in the battery settings.
5) Have you emptied your Temp folder in a while?? This is proven to increase system performance: C:\Users\Corrosive\AppData\Local\Temp