Woocommerce Variations problem

Anyone experienced a problem with Woocommerce where the variations in the product data just freezes? Well to be accurate it cycles like it is processing but it never ends and only does this on some products, some go in fine but every once in a while it cycles and won’t allow you to add the variations and returning to those same products, they still have the issue. I have ensured that the products have attributes set from which to select the variations without any luck.
I am on WordPress 4.3 and using Woocommerce 2.4.6, I have updated outdated templates, I have reinstalled theme…I am just at a loss for what to do next…any ideas