If you are reading this already chances are you know what you should do. https://www.toiletpaper.com.au/machine-dishwasher-...
Along time ago we decided here at the toilet paper man to give you a better product and introduce a phosphate free dishwashing powder. You only need half to one teaspoon per wash (what my wife does is take a small container and leave some in it and pour it into the dishwasher slot). Still keep using your Rinse Aid even though it is not necessary for this product. Others will tell you tablets and other products to try as it is easier. Sure it is, but spend an extra 2-3 seconds to make it better for your family and life. Problem solved.
Here is an article from the Sydney Morning Herald where the majors are playing catch up regarding dishwasher tablets.