Hello,
Please check http://www.webpagetest.org/result/150518_TM_BTA/1/details/ .
Slow loading is caused by your images. Have you tried to optimize them?
Please refer to these articles:
http://codex.wordpress.org/WordPress_Optimization
http://techtage.com/speeding-up-wordpress-sites/
http://www.sparringmind.com/speed-up-wordpress/
Thank you.
Regards,
Eva Kemp.