product attributes can't be loaded.

[smallfish]

I have more than 2000 product attributes for 1 group.

So that the product attributes cannot be loaded when I try to add the combinations for a product.

If the system can allow me input custom product attributes when adding the combinations for a product, then I don't need to select the product options from the global product attributes.

If PS can add the feature of input custom product attributes/options, then it is more convenient for me to add an attribute / option in a product.