If you can build your own socket server then doesn’t need third party anymore. Either addon does same thing but difference technical.I'm probably being stupid but why does it need a third party for this? If it's getting data from your own server?
Does this mean it won't be resource intensive?
Xen is a good developer from the plugins I've used, but his plugin for the same thing (https://xenforo.com/community/resources/live-content.6381/) lots say causes issues so I'd worry about the same here