In theory, there is no maximum file size for PowerPoint. This will show you everything that’s running on your Mac and what resources each program is using. You can also use Activity Monitor in Applications and Utilities. Either way, make sure you’re not overloading your computer. If you see a lot of apps running, close some of them down. Press Cmd + Alt + Escape to see the Force Quit Applications menu.
PowerPoint in itself shouldn’t stress a Mac even slightly but if you have other programs open and are neck deep in work, you may have a lot going on and your system may just be running short on resources.
