Very basic, and servers are not always up and running. 'Smart location' makes no sense since it uses random and very far away servers(higher latency). No updates on the extension from developers since Mar, 14 2019!!
The same is true for the standalone Windows app, not only the extensions have hiccups.
The good part: when it runs okay, streaming plays smoothly and no major buffering issues. Geolocation spoofing works reasonably, it needs improving.