Microsoft Teams, hands down. It is utterly atrocious. I've never seen an app that uses 40-80% CPU on a modern laptop non-stop to do not much more than ICQ/AIM/

Microsoft Teams, hands down. It is utterly atrocious. I've never seen an app that uses 40-80% CPU on a modern laptop non-stop to do not much more than ICQ/AIM/mIRC used to do in 1999 on a thing that's probably less powerful that my alarm clock.