The problem is, games and apps have to opt-in for eGPU support. That's been clear since the original eGPU support in macOS 10.13.4.
There is no universal eGPU support in macOS, it doesn't start acceleration on its own.
I believe Tomb Raider is one of the first games that support eGPU: https://www.tombraiderchronicles.com/headlines4083.html
DaVinci Resolve support it as well as mentioned in this video: https://9to5mac.com/2018/04/19/macos-egpu-performance-test-d...
The problem is, games and apps have to opt-in for eGPU support. That's been clear since the original eGPU support in macOS 10.13.4.
There is no universal eGPU support in macOS, it doesn't start acceleration on its own.
I believe Tomb Raider is one of the first games that support eGPU: https://www.tombraiderchronicles.com/headlines4083.html
DaVinci Resolve support it as well as mentioned in this video: https://9to5mac.com/2018/04/19/macos-egpu-performance-test-d...