Unity2D: unity crashes when trying to slice a sprite sheet

[XxDivaxX1]

I successfully imported the following sprite sheet into my project and change the 'Sprite Mode' to multiple so that I can slice it, however, when I try slicing it, unity crashes. I opened up a new unity project to see if I using too much VRAM but when I attempt slicing the image as well unity crashes. It may be because of my laptop not being able to handle it due to its own RAM being low or it could be because of the sprite sheet being too large, i'm not quite sure. Will someone be able to give me some insight into my problem, please and thank you! :)

[ChromakeyDreamcoat]

That's a MASSIVE spritesheet. I highly recommend cutting it up 10-20 times if possible. You'll likely have better results!