As long as the important thing is that the posts you make make sense, it's fine in my opinion. As long as the interval between your posts is only 5 mins, I hope no one does that, maybe at least 10-15mins interval before you post again will be fine anyway.
I can easily post 2 or 3 times in just 5 minutes. It all depends on what topics I'm participating in.
The relevant thing here is the posts we make and not the response time between one or two posts.