An integral part of my daily work that creates an integral headache

The stability of Skype for Business (SfB) is terrible. Every single colleague of mine complains about frequent skype problems. The problems are also quite varied, so it's more of a "flavor of the week" problem (or flavor of the day in particularly bad cases). A common ice breaker on a call is a quick anecdote about the latest skype problem someone has experienced. While it has gotten slightly better in the ~2 years we've had SfB, I still experience problems at least on a weekly basis.

Video chat using webcam often completely bogs down my PC (which has hardware specs more than capable of handling it and a gigabit fiber internet connection) to the point where I cannot even use other programs. Example: my team was recently on a call where we were all on video and I was editing a PowerPoint in real-time during the call. It got to the point where I would type something in PowerPoint and after a several second delay, the text would slowly scroll out across the screen like the intro text on some 90s spy movie. Several days later, tried the same thing with the same result. I have complained to colleagues about this and they have reported similar experiences.

The aforementioned benefit of Outlook integration sometimes becomes a con. Often the Skype meeting plugin will be running so slowly that Outlook will automatically disable it, and I have to manually re-enable the plugin to be able to schedule Skype meetings.

On chat, I frequently get an error message paraphrased as "unable to deliver message to [recipient name]" so I'll try again. Half the time the recipient DID receive the message so I'm sending the message multiple times. But I cannot assume that when I get that message it is going through because the other half of the time it doesn't. SUPER annoying.

The previous tool, Jabber, could display screen captures directly in Chat. SfB requires downloading the screen cap. Also, there's no screen cap tool. I know the Win+Shift+S shortcut in Windows 10 to grab a screencap, but many people aren't aware of that so they struggle with the lack of the button. It's a Microsoft tool, so maybe they should add a tooltip about how to screencap...

Seems minor, but when screen sharing the "stop sharing" button is in a little banner at the top center of the screen that's hidden until you hover over with the cursor. Due to the placement, I and many others frequently click stop sharing when attempting to click something at the top of the screen, such as a browser tab.