Ace Combat 7 has a known memory leak. As you play, the game uses more and more Video RAM (VRAM) without releasing it. Once your GPU runs out of memory, the game crashes. Increasing your system's Virtual Memory can act as a buffer to prevent this.
How to increase Virtual Memory on Windows 10/11:
Sometimes the saved graphics settings become corrupted, specifically the refresh rate or fullscreen toggle.
Fix:
Navigate to: %LOCALAPPDATA%\ACE7\Saved\Config\WindowsNoEditor
Delete the GameUserSettings.ini file. Launch the game. The engine will rebuild it. This fixes 40% of launch-related fatal errors.
Few games are as infuriating as Ace Combat 7 when it crashes. The "Fatal Error" is a wall, but it is not indestructible. For 99% of users, the solution is the Pagefile fix (#1) combined with turning off overlays (#4) .
For the remaining 1% with high-end hybrid CPUs: Core affinity (#8) is your savior. ace combat 7 fatal error
Bandai Namco has largely stopped patching the PC port (focusing on Ace Combat 8), but the community has reverse-engineered the fixes. Do not let a generic Unreal Engine error ground your squadron. Adjust your settings, roll back your drivers, and get back to flying.
Remember: There are skies unknown waiting for you. You just have to crash the fatal error before you crash your jet.
FAQ: Ace Combat 7 Fatal Error
Q: Does the "Fatal Error" mean my GPU is dying? A: Unlikely. AC7 is hyper-sensitive to software conflicts. Unless you see artifacts (purple/green pixels), your GPU is fine.
Q: Does this happen on the Microsoft Game Pass version? A: Yes, but worse. The UWP (Universal Windows Platform) version has stricter memory limits. You must run the game as Administrator and disable "Fullscreen Optimizations" in the .exe properties.
Q: Will DX12 fix it? A: The game only runs on DX11. There is no DX12 mode. Do not try forcing it via command line; it will crash immediately. Ace Combat 7 has a known memory leak