Comment by windinthew:
I think the text in the Release Notes is (more) correct "Much faster
editing with larger projects". Fit and Zoom can keep you waiting for 20
seconds in one hour of audio and 30 seconds in two hours.
I agree beyond about two hours, edits are not "instantaneous" on Windows
(though they are on Mac up to about 5 hours), nonetheless about 4 - 5
seconds to make a cut in 15 hours of audio is much better than 30 - 60
seconds that we had before on Windows.
I think it important not to imply that changing the view position in long
projects has got any faster. So I would much prefer to say something
like "Edits are now processed much faster in longer projects of a few hours