I'm using Google Cloud Services for my business. Our platform is based on PHP and mySQL, and I use App Engine and Cloud SQL for this. I'm using default App Engine scaling settings with F1 instance and a D2 Cloud SQL instance (because of speed issues). Once I switched from a shared hosting plan to Google, my website has drastically slowed down in performance. Saving settings takes up to 13 seconds sometimes - and now I'm paying $350 a month instead of $20.
Am I doing something wrong? How can I either reduce costs dramatically or increase performance so the huge price hike is worth it?