I have deployed teams in 'island' mode for our org and I'm a bit disappointed with it - we've had firewall problems with external attendees and have had to swit

I have deployed teams in 'island' mode for our org and I'm a bit disappointed with it - we've had firewall problems with external attendees and have had to switch back to skype for that case. A few users have had the teams client crash repeatedly during calls. I don't see how anyone will move to it with issues like these.