Hi,
Welcome to the forum.
When I try to rotate print and call context menu, after pointing cursor on any from five option I must wait 3-5 seconds from system to react.
Are you working with the context menu on the page preview on the main screen or the Page Editor?
If working in the Page Editor it's best to use it set at "Thumbs/Small Images" for speedy operation. If you have it set at "All Images" or "Soft Proof" it is slower to produce the high quality screen image. See screen shot below.
Maybe this setting has got changed accidently?
Terry
PS. The setting mentioned above does not affect the page preview on the main screen, that should be fast when the rotation is changed.