I've found a problem regarding this module. When you have two or more options assigned to a product, with each option consisting of 100+ attributes (yes, it is left and right eye dioptre, and is needed, the attributes range from -20.00 to +20.00 in 0.25 increments, that sums up to 2*161 options.) the options page at a specific product's page (where you further filter the available options for that specific product) doesn't work. No matter what is selected and what is not, it always reverts back to the default - everything selected - state.
If I only assign one attribute from the two, then the filtering works. After that, enabling the second attribute again corrupts the filtering, but it will revert to the state when only one attribute was assigned to the product.