I worked on the server a lot. It seems to be pretty stable, but the real test starts now. Please leave issues in my pinned discussion, thanks!
Using a better compiler, I'm seeing a 20% frame rate performance increase, I hope it's the same or better for you all.
Changed: The default map for matchmaking, mixing it up. You can still choose any of the three maps when inviting a friend to play with you.
Added: a message signifying the server is waiting for the other player to finish watching the waves before bringing you back to the build phase.
Hopefully from here we can get back to adding features!