While optimizing it makes sense medium term, could ZoomViewer be given its own machine for now so that it could be put into wider use?
I'll keep an eye on how it performs. Just last week I finally moved it to labs. [[User:Hedonil]] helped me optimize the webserver configuration on labs and supplied a watcher/restarter script. For now it seems to run fine. If necessary it could always be moved to a separate instance. Cheers, Daniel