You can see the problem quite clearly here:http://www.taiwanteacrafts.com/product/wenshan-bao-zhong-tea-lot-110/. Look at the bottom of the page. The second set of pictures are giant sized.
I've tried re-sizing the pictures, reducing the number of up-sells listed nothing works. I really like this feature, but I can't use it because of that problem. I've contacted Woocommerce who said it was a theme issue. So here I am.
What have I done wrong ? Any help would be appreciated. Thank you!