Currently It is not possible for me to make video tutorials, but I have spent an egregious amount for the documentation so that it is fun to read with colors and cards and stuffs on this page, I hope its enough read me as if I were a book!.

The overlay uses quite a bit of resources, so it needs to have lifecycle in order to free up those resources.

The only time I will do improvement on the performance is when Blender Foundation allows threading on their Python API, before that any optimization is a loss cause. Although I already did the best of my abilities to fake the multithreading using split deferred updates on the dependency graph, but this would sound like an excuse or a skill issue on my part.