Since upgrading to Windows 8.1 and doing a clean install, I've noticed a *lot* of stuttering and freezes with Word and OneNote on Office 365. Opening up the Task Manager shows high CPU usage, over 40% on my dual core (with HT) CPU.
I'm not doing anything computationally expensive in either Word or OneNote - I'm just typing a few words into a document or jotting down notes in class! It's annoying especially when starting up Word or OneNote: for instance, OneNote freezes with >40% CPU usage for five seconds after starting, whereas in Windows 8 it would be available right away.
Even while typing this post I've caught Word spiking into >40% and freezing, while it's in the background!
Similar observations from anyone else?