It runs perfectly fine most of the time and then will occasionally lock up my entire server until I reboot.
I've been working on getting some better monitoring and log aggregation set up so I can troubleshoot what is actually happening but it's a bit slow going. As of now I can't tell if the database is getting overloaded, if the frontend is getting spammed, or what is going on really.
My instance has two users and it runs on a VPC with 2 CPUs and 4GB of RAM.