Default values will be 1 room per minute, with a burst count of 10. It's hard to imagine most users will be affected by this default rate, but it's intentionally non-invasive in case of bots or other users that need to create rooms at a large rate. Server admins might want to down-tune this on their deployments. --------- Signed-off-by: Olivier 'reivilibre <oliverw@matrix.org>