Have you varied the dosage? It may take some effort to overcome the chemistry. My DW manufacturer suggests as an alternative to rinse aid using a solution with no more than 10% citric acid, which may be an option.
Another option is to keep an eye out for used European style dishwashers; they often have softeners built in with a salt reservoir in the base. That assumes you can change the dishwasher which you may not be able to.
Have you varied the dosage? It may take some effort to overcome the chemistry. My DW manufacturer suggests as an alternative to rinse aid using a solution with no more than 10% citric acid, which may be an option.
Another option is to keep an eye out for used European style dishwashers; they often have softeners built in with a salt reservoir in the base. That assumes you can change the dishwasher which you may not be able to.