Hey @Simon_Thompson!
As I recently replied to a similar post with similar questions, 10 timers is too many, try regrouping them in less.
Nightbot won’t send too many messages at the same time as Twitch’s API has rate limits, and if Nightbot reaches them, it’ll be timed out of your chat for 30min. Besides, if it sent 10 timers at once it would be really spammy, and most of the time that kills a chat.
Here’s the link to my reply from 3 days ago…
Now regarding your third question: when the timer reaches the time it’s supposed to be sent, it just checks if within the 5 previous minutes there has been enough messages sent.