At the moment it is running on the smallest, and cheapest, digital ocean droplet with only 512 MB of RAM. The minimum recommended for Discourse is 1GB but for me this seems to be working well under the current load.
Drop me a line here if you ever find it sluggish and I will check through the logs and see.
I welcome you to share the address around other Clarionites and see if you can push the server a little more too of course 