Insufficient server power for number of users. I don’t think we have enough players that this should come up. How many active Atlas players are there? I’d guess under 10k and only a portion of that are on at any time. This isn’t like Fort event start where thousands are trying to raid in first 5 minutes.
Insufficient network capacity. Again, not likely due to number of players and their access technologies (all have wireless somewhere in the path).
Inefficient protocols. Might be part of it, but again I don’t see it being the big issue. Unlike others, I haven’t reverse-engineered their protocols so I can’t say anything concrete.
Data representation and synchronization on the server(s). Most likely problem area. The Atlas world is not that big but keeping all of the state changes consistent, persistent and efficient could be a tough problem using out of the box solutions.
In summary, PGEggToken is likely correct - software. Pure speculation though.
There are 1200 atlas teams, I think an estimate of 8 players per team is on the low side. Diamond and Sapphire alone is over 14k, and those are pretty much all active. I’d guess at least 40k more in plat.