Is OM Horizontally scalable ?

[Bhushan Patil]

Hello everyone, few months ago, my team used OM (v3.03) in their 
application. There was a scenario when if the total users in a room goes 
beyond (roughly)50 then audio wasn't streaming. When we ran *top* 
command, it was showing 100% cpu utilization.
My question is if I do clustering and add few more nodes to that 
cluster, Can one room have 400+ users ?
Is OM Horizontally scalable ?
PS: The room type I am talking here have whiteboard and moderator share 
his screen and moderator can allow others to use mic.