Managing sound and video settings during Teams meetings and calls for optimal communication
I have confirmed that the "new" (worse) Teams has a message post upload internal timeout of only 30 seconds when posting images to a message. If you post a 6mb or larger GIF in the "new" (worse) Teams, then it will most likely just say "Failed to send." I guarantee you microsoft does not even yet know this because they are NOT performing worst-case analysis on their products. The previous classic Teams was fault tolerant. The "new" (worse) Teams does not tolerate a temporarily slow internet connection or a temporarily slow computer (whenever overall CPU activity is high).