Hi guys, before anything sorry about my bad english.
I have a doubt, the glass material makes some distortion on the refraction i think.
This two images are with and without the glass, you will se what im talking.
My bet would be smoothing. I it’s 3ds Max - put “smooth” modifier (not turbosmooth or meshsmooth!) on the glass geometry and do not select the “autosmooth” option.
It could single polygon objects applied glass material without thin option turned on. If that’s the case, than you have to either add shell modifier to glass pane objects, or turn on thin option in glass material.