Check Check "Run this program as an administrator." ⚙️ In-Game Optimization

Point the tool to cossacks.exe in your installation folder.

If you consistently crash in the late game, try playing maps with a .

This allows the game to access up to 4GB of RAM, significantly reducing crashes during large 8-player battles. 2. Increase Windows Page File Size

Optimizing your settings specifically for RTS games.

Lowering shadow detail provides the biggest performance boost in large-scale battles. Limit Unit Counts

Under the tab, click Change in the Virtual Memory section. Uncheck "Automatically manage paging file size."

The engine can handle 10,000+ units, but your hardware might not.