Losing your software user’s attention is a matter of seconds, or probably just one second. That is why you must strive very very hard to make sure the application has sub-second response times. Speed of your application, is still The Killer Feature. Here is why
Do you know why your developers get so irritated when someone (You) distract them? After all you have a software in production, and so your developers should be able to constantly adjust to the changing needs and nature of the challenges you have , either due to problems in production , or because of competition. As a manager or a CEO you would love to work in such a fluid organization which can adjust priorities rapidly based on external factors. In reality you might be shooting yourself in the foot.