Oh, thanks! I'm hosting it on DigitalOcean. Honestly I'm designer and I worked all this Meteor / Telescope stuff together by myself and not sure how should I respond to the performance question :D How can I measure it so it'll be helpful for you?

well, i'm kind of in the same boat... what size node is it on, and how many users can it support? also, you may want to check out the "meteor hacks cluster" package. it allows meteor to take advantage of multiple cores.