Just came to say that official client (all its processes combined) uses 1.1Gb of RAM on my macbook air, while this, playing the same track from the same playlist and nothing else, gets only up to 280Mb

That's an improvement for sure, but 280MB also seems like a lot.

Because the official client is an electron app.

I came here to say the opposite. Running on MacOS 15.7 the original Client uses ~200mb and Fastpotify uses ~500mb playing the same song while being substantially slower when navigating music.

EDIT: I forgot about the Spotify Helper processes - taken into account the original spotify needs ~1GB. However it's still a lot faster than Fastpotify