BakeRadiosity is a 3ds Max plugin that changes an Adaptive Subdivision result into a new mesh object. The lighting calculation results are baked onto that mesh's vertices, so the global illumination stays attached to the geometry rather than being recomputed.
With the Nitrous feature, the GI effect can be given to walk-through and real-time viewing. That makes it a fit for background data creation for games or for Design Visualization previews, where lit geometry needs to play back interactively.
Typical uses include background stage model creation and real-time Design Visualization content creation. The plugin is listed at version 1.0.0, and its most recent update added 2024 support without changing the version number. A demo video is available on the developer's page for anyone who wants a closer look before installing.