Intel Core i3, Windows 10.

It keeps freezing or crashing when i go from one tab to another within the program. This problem is happening every 30 minutes of work and making it impossible to use the program and I'm losing work that I'm currently using.

I have to close the program down and start it up again. Once I change tabs I get the dark grey background and I cant go any further.

I have uninstalled and reinstalled Illustrator and I am having the same issues.