I find an overreaching antivirus as well as hardware issues can cause that.
For example the SaveAs could take a very long time if the folder has thousands of files in the folder. I know folk don't want to know how things work but it will take a long time and long as the folders get more and more files. Any clogged folders?
How long since you ran disk cleanup?
i have window 10 installed on my laptop lenovo v470 it sometime hangs on save as dialog box i canot understand what the problem is? does anyone know about this problem i appreciate your help thanks