High activity on the DB would also be a factor -- given its size & the fact that it's archiving, I could also guess it could be a pile of deletion stubs caused by the archiver.
And ... the view discard rate and refresh method isn't changed, I assume. If you've been into a view design and played with some of the settings, lemme know. The view should be "auto, after first use" and discard should be the standard 45 days.
On the assumption that the fixup has truly fixed the basic structure of the database, I always try one additional thing: destroying & rebuilding the view. Shift-F9 will force the view to rebuild. It'll take time. I'm interested to know if the time it takes, is the same as the time it takes to open the view. So keep track if you would, please.