I hate those websites that lag and put me on a clock. That’s the view of every internet user. If you are running an online store that wastes even few unnecessary seconds of your user – you l certainly lose potential customers. Unfortunately, magento performance optimization is a very technical task and an inexperienced developer can break your store. Only an experienced company with certified magento coders like Magelogix can implement cache/performance modules on your store and upgrade it to meet google speed standards.
Your store is not a chemistry class where you experiment with it. Hand it over to professionals who know how to hit the bulls eye.