An aero road frame might save you 90 seconds on a 24 mile (40k) TT @ 30mph. Which, at that speed, will take you about 48 minutes.
When you're riding on ordinary streets, you'll lose more time at stop lights than you'll ever save with an aero frame.
If you need (or just want) a new bike, get a new bike. If a specific frame works for you, it works for you. If your goal is to beat a Strava time, I wouldn't rely on a piece of equipment to do it for you.