The online chat experience is subjectively worse in the last 5 years or so compared to how it was in the '90s, '00s, and early '10s. I don't have the issues th

The online chat experience is subjectively worse in the last 5 years or so compared to how it was in the '90s, '00s, and early '10s. I don't have the issues the OP has, but I do have significant lag with text input when typing in Teams or Slack. This was never an issue with IRC clients, XMPP clients, or aol/msn/aim/yahoo/icq instant messenger clients. I'm not sure about screen sharing, but I do know that video chat was supported by later versions of the proprietary ones. At least screen sharing and video/voice chat works well on Zoom, even on Linux distros.