Pages lags with Big Sur update
This question has been asked but the answer was insufficient: Pages has started to lag since updating to Big Sur (I have a MacBook Air, Retina, 13-inch, 2018), for files NOT on iCloud, small files with no embedded video or anything, normal amount of low-energy draw apps in background, and rebooting the computer does not fix. Clearly the problem is with Pages and it has never (in my experience) happened before Big Sur, even with Pages files hundreds of pages long. The other users asking this question reinforce these details.
MacBook Air 13″, macOS 11.6