I’ve been tinkering with the Transmitter server code recently - to see if we might remove a bottleneck that has afflicted it since I first built it. To test out the new server, I’ve re-installed Transmitter on a test server, and am making it available to the community to try out.
Let’s see how well it handles lots of people at once 
https://virtualflightonline.substack.co ... ter-server
I've installed it at transmitter.virtualflight.online for the moment, but there's a small snag - in that nginx (the webserver) doesn't re-write php files nicely, so I'll have to have a think about how to make it do that. If you install it on Apache, it will work nicely out of the box.