Yes I have exactly the same, since this weekend. I've got a Oneplus 5 with 8 GB ram 128 GB storage. It started with not being able to start a note or a picture using the + button, I deleted all + options and set it back. Now the text note is fine but for using the camera I have to wait for 30 seconds before it opens (first I just see an empty note). Opening any note starts with an empty note and then I have to wait 30 seconds (I timed it), before it opens. In the mean time I can't do anything; Evernote freezes. This is unworkable.
They solved the search problem and now this. Getting a bit tired of it.