React concurrent makes a lot of sense for UI elements, which are complex and self contained and sporadically updated. Whereas a game engine is much more about

React concurrent makes a lot of sense for UI elements, which are complex and self contained and sporadically updated. Whereas a game engine is much more about raw speed, and every element is updated on each tick. I would be surprised if the overhead of React and concurrent mode bookkeeping were worth it for a game engine.