storyline 360 can't save my project (low memory error)

I'm working on local drive.
Its soooooooo frustrating when I have to restart program after some edit/create objects jobs. When I'm not restarting SL360 its getting slower and slower and bugs start to appear like: when you try to select multiple groups then sudennly some groups are moving 100 pixels to left or just elements in those groups getting smaller or bigger or moving where they want.

This program have some serious memory problem (leak?)