I've had the same problem 4 a couple of months trying 2 edit a big note as well. [use it as sort of a logfile..]
Evernote gets unresponsive when i try 2 search, after a while 'Evernote isn't responding' popup, when tapping 'close app' > returns 2 'frontpage'.
[gets unresponsive all the time..] as a result i stopped using Evernote.
Btw i love the search within feature, it seems lots of other [big] apps are lacking. [tried 6 or 7 sofar]
Guess it probably has 2 do something with notesize..
Is there a way i can use big chunks [or copy all] of my voluminous note?