it is probably just the last place that you will notice the changes. mine is the same way. i have lost 105 pounds and still have that layer, and like you said can see my muscles fairly well everywhere else. many times it is just the last place that you will lose it completely from.
You are probably right... patience isn't my strongest
Yeah, for some people, it will take a decent amount of time to loose that bit of fat. Think of it this way: How long did it take you to gain the weight around the stomach region (I'm guessing more than a year or so), doesn't it seem logical to give at least the same amount of time to reverse it? You can speed it up though (this isn't healthy, but has worked for many fitness models), switching to a low carb diet. E.g. 80-100g carbs a day, 200-250g protein and around 100g of healthy fats. You also lower your sodium intake to no more than 2300mg a day.
This is bad for the human body in the long term as we were designed to run on glycogen, however near those last moments where you have that bit of water weight and fat, you can do this.