On the configuration of installing Parallels on MAC computer and then installing Windows 10 OS on Parallels, it is up to the user to assign how much RAM to Parallels. Some users encountered some issues with e4.1 software below:
On a MAC computer, the user added the advanced sequin element to e4 software, created a sequin designs without a problem. However when it came to reopening same designs, she would get an exception access violation error C000005 (System Error). This problem did not happen when she tried the same process on a PC.
On a MAC computer, the user had problems of importing eps files directly into ES. It took over 10mins. The user tried same files on a PC and opened within secs.
Assign more RAM to Parallels, 8G or more.