This policy setting controls whether Office in Application Guard uses hardware or software acceleration to render graphics.
If you enable this setting, Application Guard uses software-based (CPU) rendering and won't load any third-party graphics drivers or interact with any connected graphics hardware.
Important: Be aware that disabling or not configuring this policy setting with potentially compromised graphics devices or drivers might pose a risk to the user's device.
If you disable or don't configure this setting, Application Guard uses Hyper-V to access supported, high-security rendering graphics hardware (GPUs). These GPUs improve rendering performance and battery life while using Application Guard, particularly for video playback and other graphics-intensive operations. If you disable or don't configure this setting without connecting any high-security rendering graphics hardware, Application Guard will automatically revert to software-based (CPU) rendering.
Note: This policy setting only applies to Microsoft 365 Apps for enterprise.