Visual Studio Code

Yeah, that's one that I can't talk badly about.
While I have used MS Visual Studio and know how slow it was, I tried VS Codium once or twice and it worked pretty smoothly. Someone probably put quite a bit of effort into making it so.

Apart from Android Studio, which ended up not even starting up properly on the work computer, Gradle itself also takes quite a bit of time and resources. I was using the NDK with a C++ project and it took way longer to setup than any BSP, despite only being able to compile for a single version of Android.