I asked chatgbt here is result:
🧠Cause of the Crash (Exception Code: 0xC0000005)
Your game is crashing around round 20–30 on every map because Black Ops 2 (Plutonium version) is a 32-bit application.
That means it can only use up to 2 GB of RAM, even if your system has more memory available.
When you play long zombie rounds, the game gradually uses more and more memory (textures, shaders, effects, etc.).
Once it reaches the memory limit, it can’t allocate new space — and Windows forces it to crash with an “Access Violation” (0xC0000005).
So, the real problem is not your hardware or FPS, but a memory overflow caused by:
Long play sessions (zombie rounds above 20+),
Shader preloading and caching,
Missing Large Address Aware (LAA) flag,
Or leftover cache/config files.
In short:
The game crashes after long rounds because it runs out of memory (RAM) due to the 32-bit engine limit, causing an “access violation” error.