I'm not a user of the Android app, but I upgraded the iOS app to 10.80.0 this morning and on reopening just went "wow"
It was listed as a performance upgrade by dang, they've been applying some secret sauce, every note selected or .pdf opened and it was "bang" nearly instant.
I've never seen V10 work so well on the iPhone since it came out.
Fair play to BS, they seem to have really kicked it up a gear with this release.