The "Out of Memory" error in Cossacks 3 is a frequent issue often linked to how the game manages save files, cache, and system memory (RAM/VRAM), rather than a lack of high-end hardware. Immediate Fixes & Workarounds Manage Save Files:
For "out of memory" issues in Cossacks 3, several solutions and workarounds can be considered: cossacks+3+out+of+memory+work
"I am the memory leak. The ghost of every polygon you forced to exist. You want your battle? I need a sacrifice. Not RAM. A piece of your linear time. Give me three seconds of your life. Permanently." The "Out of Memory" error in Cossacks 3
Under the Advanced tab, click Change in the Virtual Memory section. Uncheck "Automatically manage paging file size." and system memory (RAM/VRAM)