Ive produced a spreadsheet which tracks the numbers of a roulette wheel by manually inputting the numbers into the spreadsheet. Microsoft Excel for Mac Im currently using Microsoft Excel on the Apple Mac. I don't understand why the same file (same session on word) have different performance on 2 different displays. With this kind of test my conclusion is office is not ready/optimized for retina displays or not using Metal 2 very well.
Meanwhile, you can find more from the official description below. This app is on the list and will be reviewed in the nearest feature.
Unfortunately, professional review of the Microsoft Excel app is not yet ready.