I fully agree.
Evernote 10.x has introduced a "large" issue in terms of responsiveness which makes that - at least for me - Evernote is too difficult to use at this stage.
Before version 10.x Evernote was more responsive. I was hoping that every new 10.x release of Evernote would solve the issue... but so far I haven't seen any improvement.
The response-issues don't have a relation to my computer of mobile phone. I'm using 3 different recent computers using Intel i5 & i7 and 2 recent mid-end Android phones. On the other hand web-version looks OK.
I hope that Evernote takes this message seriously as they risk that many end-users will start moving to competitive solutions because in case their response problem isn't solved.