In the game's Quality tab, find the VRAM Scale Target slider. Many players find that lowering this to 50-70% prevents crashes.
If the error persists, you may need to address system-level stability: How to fix call of duty warzone directx error |...
Warzone is notoriously sensitive to overclocking. If you have adjusted your GPU or RAM (XMP/EXPO) settings, revert them to stock/default in your BIOS or through tools like MSI Afterburner. In the game's Quality tab, find the VRAM Scale Target slider
Overlays from Discord , NVIDIA ShadowPlay , Steam , and Xbox Game Bar frequently hook into the rendering pipeline and cause DirectX crashes. In the game's Quality tab
In your launcher settings, add -d3d11 or -dx11 to the "Additional command line arguments." Note that some newer versions like Warzone 3 may require DX12 and might not support this rollback.