My Gemini client 'Lagrange' opens up almost instantaneously vis a vis Firefox which rumbles and tumbles on my modest laptop. Talking about bandwidth, unless sites these days shove you with useless elements, they can't rest in peace. Wasn't the NYT ~ page once 15 MB in size?

You mentioned 'Session' ; isn't that even more err, obscure than Signal? I mean, I like to use such clients but one needs IRL people to use such stuff as well :p.