JUCE is also slow as heck and takes a lot of know-how to make performant. Notably, if you want any kind of real time animation or display, you don't do anything

JUCE is also slow as heck and takes a lot of know-how to make performant. Notably, if you want any kind of real time animation or display, you don't do anything component based. It also involves a custom C++ module system and build strategy that is hard to make fast and generally is impossible to use JUCE as a library, so you wind up recompiling it as a dependency an excessive number of times (which adds up in CI).