Pretty much. Historically, dies down after a couple weeks. Even during normal operation, there are often worlds that are near impossible to create characters on. Fortunately, the "minimal timeframes" are hours long over off-peak hours.

New characters need to be put into the world to compete the creation process, and if existing players are already struggling to enter, there's not much help for the situation short of additional hardware that would be unused 90% of the time.