At 40kbps I don't think the latency can be great. Having done SSH over 64kbps when I overran my mobile data subscription, my experience is that modern SSH clients expect more than that to run smoothly.

> Also, slightly meta: What is this web ... app(?)? Looks like a git frontend?

Looking at the source, this seems like a custom-built git frontend, served by a bespoke web server called BEJY (by the same author) it seems.