Msg/s rate?

Msg/s rate is up to you if you build and host your own services. But, if you use a service provided by another party, like Unity or Exit Games, then you will find that there are limits to messages put in place to prevent the worst case scenario of some games running with out of control messaging. These games will starve out other games, which isn't fair to anyone. So the trade off is that you dont have to worry about deployment, scalability or any of the other types of cloud operational problems, but you have to work within the limits established to keep the service healthy for all. Usually these third party services will offer the ability to craft a special agreement for custom hosting and bandwidth outside of the standard payment options.

So that said, UNet matchmaker and Relay Server has a message limit of 30 msg/s per player with a max message size of 150 bytes. This is a cap per player, not per room! Occasional spikes are ok since we sample over time. We won't do a disconnect if one packet comes in at 151 bytes or over one second you sent 31 packets.

Consider this example. You have a CCU for your game set at 100 concurrent users/players. In one configuration of matchmaker, you could have 10 rooms running with 10 players in each room. Each player is capped at 30 msgs/s and *this* room configuration is effectively capped at 300 msgs/s (30msgs/s per player * 10 players). Or you could have a different configuration of 1 room with 100 players. Each player is capped at 30 msgs/s and *this* room configuration is effectively capped at 3000 msgs/s (30msgs/s per player * 100 players).

One of the reasons we are in a free preview mode at the moment is to make sure that these limits are tuned in optimally for everyone. So please try it out and send us your feedback.