Today I tested how HGui performs on WinUAE (68020+FPU+RTG, fastest as possible) and here is a video, I think that the result is not bad since there is a lot of space for optimization and the demoed ui at the end of the video was very complex.
In this example gadget cache (both for foreground and background) was switched on, that’s way it eats some memory 🙂
This lite demo has been added to my GitHub in the examples folder.