We have a user who works in very large spreadsheets. She will have multiple opened at one time. On occasion, her spreadsheet designer will freeze and cause her excel to freeze up. She is running on Intel Core i7-6700T 2.81 GHz with 8GB of RAM and a 64 bit Windows 10 OS. Has anyone had issues with spreadsheet designer hanging up their excel and if so, is there a resolution such as more memory, etc. on the PC itself to resolve?