This probably doesn't sound like a big deal to most people, but I recently installed Office 2016 on my home computer (after using Office 2010) as my university allows students to install it on up to 5 devices.
However I noticed that the ribbon size on my computer is bigger than on the university PCs. See the attached image for a comparison (the original screenshot is what it looks like on the university PCs and the Word window superimposed is how it looks like on my PC):
You can see that the space allocated to ribbon commands is the same, but the tabs and the quick access toolbar are noticeably taller on my PC.
I can also confirm that touch mode is definitely not enabled.
Why is this and how can I reduce the ribbon size?