is Draft Sight 2020 compatible with AutoCAD 2020 and Civil 3D 2020 ? 

I use either AutoCAD 2020 or Civil 3D 2020 on my desktop at home. I then save it for my boss to open in the office. He uses Draft Sight 2020. We never had a Problem working with different programs since both use .dwg.

We now have a problem editing the files on my bosses PC. Or more specific zooming in and out editing the file works so far. 
If we try zoom function the program just crashes and shuts down.

I have tried saving different versions like "CAD2018.dwg" "CAD2013.dwg" "R14.dwg" but the same problem remains.

Can anyone help me out? 

Thanks :)