My experience, contradicted when I bring it up usually (But not by this article): I've found the Element client to be slow and buggy, and I still can't figure out how to either verify my account, or get the verification notifications to go away.
I think everyone agrees that the classic Element client is slow and has a tonne of tech debt, including bad encryption UX, which is why we rebuilt it as Element X. Web /Desktop is yet to follow, although we’ve started it here: https://github.com/element-hq/aurora