Well thank you,
But the goal is not to patch Nopcommerce with something else. The goal is to have a performing stand alone nopcommerce. If I have to pay 500$ to make something work normal it is non sense. I prefer give 500$ to nop team that worked so much for there product.
So I have the same question, Pre formating data to gain speed is a good idea like you can see in here: sdvariations.com. Can NopCommerce team fix speed issue once and for all futur version?