Context menu alone takes a few hundreds milliseconds to load every time. And then you have the infamous "show more options" to click if you want to do most of things (in my use case).

Open a folder isn't much faster either, there is visible delay. with the current-day hardware there is no reason why this isn't instant.

Compare it with Windows XP or Windows 7, the difference is night and day.

Interaction with OneDrive is horrible too, this is particularly bad because it was fine on Win10. When a folder is syncing it constantly "refreshes" itself which causes you to lose the focus if you're renaming files. This is the single most annoying thing because I do close a doc -> immediately rename it all the time.