Catagories Combinations Slow Page Load

[huduyudesign]

Trying this one more time... I'm running Prestashop 1.5.4.1 on Hostgator VPS 3

 

Website I'm using Prestashop on is having serious slow loading pages ONLY on pages that have combinations used on the product. Example http://adogstore.com/calendars/51-tributepkgspecial.html

 

Over the weekend worked with various fixes, cache issues, removing modules etc. with no fix. I've tried to recreate a product using same combinations & can't even do that. Something in my prestashop, I suspect having to do with combinations, is wrong & I cannot for life of me figure it out. If anyone has suggestion, please help! I can't even upgrade this cart to newest version... very frustrated.

 

Thanks,

Susan

PS: We're in the middle of our sales ( done from June to Aug 30th) why it makes it also hard to do full rebuild or anything else.