Implementation Notes and Known Issues for Wwise Unreal Integration

Cooking and Packaging

Iterative cooking is not supported in 2023.1. However, it is supported in the 2024.1 version of the Wwise Unreal Integration in combination with Unreal 5.5 and higher. If iterative cooking is a requirement for your project, consider upgrading to Wwise 2024.1 or any subsequent version.

For more information on iterative cooking in Wwise 2024.1, see Known Issues (2024.1).

Multi-Process Cooking

Wwise 2023.1 does not support Multi-Process Cooking in Unreal. If the option is enabled, Wwise will not be cooked in the build. To disable the option in Unreal, set CookProcessCount to 1. For more information, see Multi-Process Cooking.

Version 2024.1 of the Wwise Unreal Integration supports Multi-Process Cooking. If Multi-Process Cooking is a requirement for your project, consider upgrading to Wwise 2024.1 or any subsequent version.

Partial Support for No Threading Mode

The Wwise Unreal Integration partially supports the -nothreading Unreal command-line parameter with the following limitations:

• Partial support is only available for Unreal 5 or later.
• The Wwise sound engine creates three additional threads even when -nothreading is set.
• Slowdowns and sound problems will occur. Crashes and other problems might also occur.

Minimal testing has been done in No Threading mode, and it is therefore not appropriate for production environments.

In addition, we recommend that if you run -nothreading, you also run -nosound to completely disable the Wwise sound engine.

Known Issues

• WG-44750 Physical Material Override on the Mesh cannot be used for Acoustic Texture assignment with an AkGeometryComponent.
• WG-52497 The Unreal Editor might hang when modifying the Spatial Sound option on the current audio device. For example, this could occur when changing from Windows Sonic for Headphones to Off. Users who encounter this issue can disable UE Audio to prevent this hang. For more information about how to disable Unreal audio, see Combining Unreal 5 and Wwise Audio with AudioLink.
• WG-69181 When applying "Fix issue" to a Wwise Niagara module, a crash might occur. A similar behavior occurs when using Unreal audio.
• WG-69640 The Unreal Editor can crash if Niagara modules are loaded from a disabled plug-in. This also affects Wwise Niagara.
• WG-69735 Only the top-most "Post Persistent Event" Niagara module plays audio.