We do have an IP based rate limiter in place that may affect you. If you are just browsing the site normally, and posting good answers you shouldn't run into our rate limiter.
If you happen to hit the rate limiter you will see this message:
There are an unusual number of requests coming from this IP address.
To protect our users, we can't process any more requests from this IP address right now.
We'll restore access as quickly as possible, so try again soon.
If you run into this I would take a short break and the ban is auto cleared by our systems. If you consistently run into this message feel free to email me at:
firstname.lastname@example.org and i'll see what I can do to get you guys up and running for the duration of your event.