Stains on windows

[Mr_Paul]

I have an infinity edge pool which when the wind blows in a certain direction picks water up from the pool and deposts it on my patio doors and windows. This then dries on and I cannot get it off. I have tried powerwashing, jif, banyo gel and other cleaners. I cannot clean it vigorously as I will scratch the glass. Has anyone any ideas on how to get the windows clean? This is a common occurence for me