Hey there,
If you would like to set up a Dedicated Server Launcher specifically for Linux, you should DM @Toolguy. A Linux client is currently a cancelled feature.
The Dedicated Server Launcher may be closed source as it is an official resource (copyright Funcom)
Since last years performance improvements for buildings, performance issues are now mostly caused by placeables (torches, decoration etc.)
Discuss the Dedicated Server Launcher here (can be used on Linux).
For how to set up a Linux / Wine server, see the wiki page:
Dedicated Server Setup: Linux and Wine