When I purchased my Bosch induction cooktop 3 years, I bought an All Clad copper set.  I have been very happy with the way everything cooks and have not had any problems.  I have been adding additional copper core cookware to my set.  Love this product and 
would recommend it. I read the review for the Wolf induction cooktop and wonder if it is not the cooktop & not the copper core. I would look further into that if you are buying a 
cooktop.