Some people might feel differently, but I believe glass of any kind to be killers in the pursuit of good sound. If it’s a window that has to be used, then maybe a thick noise cancelling drape to cover it. My window on my front wall didn’t need to be functional, so I form fitted some double wall cardboard into the opening, painted the side facing outside black, then used room treatment to cover that. Very noticeable difference with and without the cardboard....as glass will vibrate and smear and thin out your end result.
My $.02