Hi, I just upgraded to 2018 Spotlight from 2017. I have noticed that when working in files that have any 3D elements, that the zooming in and out is extremely slow. I could zoom in/out and nothing will happen for at least 30-60 seconds and then it zooms in/out all at once. Also, after every few actions, the cursor freezes and takes about 30-60 seconds to go back to normal. Just want to know if anyone else is having this issue and/or if there's any way to fix this because its getting really aggravating! I was not having these issues in 2017.