I have this problem with the iPad version, but not the Mac version. As I type this, there is only a modest lag, but I simply can’t use EN for anything else. Unless there is a fix soon, I will need to change to a different app.
BTW, this string starts roughly a year ago, and the issue is still not fixed. Hard to believe this is a problem within EN’s control or capabilities at this stage.
So, off to find something different…