Actually for me it's enough to evaluate something like
l =LinkClock.new.latency_(Server.default.latency); in SuperCollider when carabiner is running.
You don't need to install a new Quark because with SuperCollider 3.11.0 everything is already inbuild (see LinkClock | SuperCollider 3.12.2 Help) ![]()
And for a more theoretically background @specht shared a presentation: