I just installed an RV042 rdual wan router. We use dsl for one wan and cable for the other. I would prefer to use the load balacing to get wider bandwidth but there are two web sites that I cannot log on to but can with smart link backup. It doesn't matter which wan is primary. Is there a way to do this with load balancing? Does load balancing really improve performance significantly? It does seem to a waste to use just one ISP while there is another available.