Here is some helpful information about very important thing - Prestashop site performance. Your site should always be fast loading and well optimized for slow internet connections for customers convenience.
The most important performance feature is enabled Prestashop cache. So don't forget to enable the cache when all your developing is finished and the site is opened for customers.
Back-office > Advanced Parameters > Performance
Here is how it should be
Memcheched should be supported by your hoster. If it's not supported you can choose the chache “File system”
- IMPORTANT INFORMATION: Here is very helpful shop optimizations: http://www.prestashop.com/blog/en/10-best-tips-to-speed-up-your-prestashop-store-3/
I had also a speed problem with prestashop in general. The SOLUTION: Move to a host and work only on Linux, don't use any CPanels. CPancels appeared to slow down the website a lot. Check my page for speed. www.gloria-agostina.com or www.gaweddingdresses.com