Be sure you have the latest update installed. Go to the Excel menu and choose About Excel. You should have version 15.22 or higher. If you need to update, here are the instructions: Make sure your Mac has a working internet connection before checking for updates. Install Mac OS X updates followed by Office updates. Mac OS X updates: To get Mac OS updates, go to the App store on your dock, and then click the Updates button to reveal available updates.
Excel doesn't have many settings related to display, other than disabling hardware acceleration, and that doesn't do anything. Zooming in seems to reduce the frequency of the hangs, but doesn't eliminate them.
Office Updates To get the update: 1. Open any Office application: 3. Make sure your Mac has a working internet connection 4. Go to the Help menu and choose Check for Updates 5. Let AutoUpdate check for and install updates 6. Restart your Mac I am an unpaid volunteer and do not work for Microsoft. 'Independent Advisors' work for contractors hired by Microsoft.