ok, I haven't reached the city, not even at the goblin camp yet but:
-> the boosteroid client, that you can download, is total crap - poor performance;
-> running the game in "boosteroid browser" is night and day in regards of performance.
-> either way, it consume lots of bandwidth - if you are in a starbuck wifi, people will react a bit

-> the nice thing is you don't have to download the game and it can be played on any browser devices. The saves still sync with steam cloud.
-> I think, in the version hosted by boosteroid, there's a glitch - when creating character when selecting "female" body type 2 and 4 shows up as male and only body type 1 and 3 are showing as female - regardless if you pick female. (it's also true the other way around - pick male but body type 1 shows up a female ..). Is this normal on native BG3 client (microsoft ppl could tell) ?
-> boosteroid subscription is 9e/month or 7e/year - this is where things break - with nearly 300hrs in BG3 EA, I couldn't resist so if you have a better willpower than I, it's not worth it and should wait for the real mac version .. or just get a PC.. my 2 cents