From State Pool Fix 2021: Call Of Duty Black Ops 2 Failed To Allocate

These solutions address 70% of "state pool" errors. Try them in order.

BO2 is 32-bit and can only use ~2 GB RAM by default. Patching it allows up to 4 GB. These solutions address 70% of "state pool" errors

To specifically address the "Failed to allocate from state pool" error, try the following: These solutions address 70% of "state pool" errors

graphical setting to its lowest possible value or turn it off entirely. Windowed Mode rather than Fullscreen. These solutions address 70% of "state pool" errors