Currently We am not using any version of Vision and we are being washing windows with a tds of 10 mainly because I have been a bit tired and lazy to change the pre filters and resin.
So far no one has said anything about spotty Windows and we been like this for nearly 2 weeks. Maybe because it's been pouring with rain every couple of days and that's given them a nice rinse.
The Windows seem fine, however I have noticed a deteriorating attitude in us.