Re-Installed 10.8.5 this morning. It's midnight now. With a single window open in the foreground, completely idle, Evernote Helper is hovering between 43 - 60% of a core. It's consistently at the top of the %CPU list. If I open 2-3 notes, it'll consume 100% or more CPU. Between Evernote Helper(s) and Evernote, it's consuming ~2GB of RAM. Performance is horrendous, especially given there's no Evernote UI activity whatsoever. Between this and every other update causing notes to render blank, I think I'm done with EN after 15+ years. I've been a loyal paid user, but this is just unacceptable. These performance issues have been ongoing for months, some going back to 2019.
@AiRev It's not Electron, VSCode and Chrome Helpers (Renderers) consume 0-1% CPU when their UIs are idle (open but no activity). This is an EN problem with whatever they're doing in their UI code. Unbelievable!