The speed depends not of the Office suite as such, but on the server it use to host it, Murena hosted it on the own server (NextCloud), but as said, you are free to host it by yourself.
I’m an old retiree and don’t need a big cloud service, enough for me to store the few things locally and for this I prefer to use the online SSuite, also privacy focused, even if it isn’t OpenSource. Also Html5, but without account, anonym, free and blazing fast, no ads, no trackers, nor other crap, files a stored locally. It’s a hobby project from 2 electricians, which gain money with their jobs, no interests of tracking or user data to make money.
The speed depends not of the Office suite as such, but on the server it use to host it, Murena hosted it on the own server (NextCloud), but as said, you are free to host it by yourself. I’m an old retiree and don’t need a big cloud service, enough for me to store the few things locally and for this I prefer to use the online SSuite, also privacy focused, even if it isn’t OpenSource. Also Html5, but without account, anonym, free and blazing fast, no ads, no trackers, nor other crap, files a stored locally. It’s a hobby project from 2 electricians, which gain money with their jobs, no interests of tracking or user data to make money.