Your theme is very heavy and not optimize properly?
Please see the result of speed test our theme and demo site here: http://www.webpagetest.org/result/130307_GN_TD3/1/details/
As you see, theme is optimized with:
- First Byte Time: A grade
- Keep-alive Enabled A grade
- Compress Transfer: A grade
- Compress Images: A grade
Please check our server configuration. Magento requirement a good server in order to run it smoothly.
If you need optimization services, please contact us for estimation.