Dedicated server performance

Does a good idea to use UE4 dedicated server as a server for the pre-lobby store where networking operations between client and server will be buy-sell type mostly with RPC? There is will be no movement of characters and replications like this. How much players can handle UE4 dedicated server in this state? Will be enought memory? I know some guys used dedicated server with about ~100-200 players per instance but I’m talking much more about 1k-10k of players per instance.

Also I would like to know an approach of how to test a dedicated server on the peak performance when connected maximum numbers of players and they are unique for the server. Currently I can’t run tons of clients on the one machine. I need to run like 1k-10k clients. Maybe there is somewhere available an cloud services that allowing such tests about which is I don’t know.

Forum thread: Dedicated Server Performance - General Discussion - Unreal Engine Forums