If it is any consolation, as a VSCodeVim maintainer, me too. We had some issues at times, a lot of them have been resolved, but that first impression is impossible to get back. Contributions have dwindled from people and I feel like it needs another kick to make it perfect.
FWIW, since recently (can't tell you which version, but maybe a week or two back), my editor has become real unresponsive (2-5 seconds delay when I switch from Insert mode) and if I type before it switches, keystrokes get inserted as text.
