For months now the fireteam finder is laggy constantly. It doesn't update in real time ever, and when I pull down on the screen to refresh it goes blank over and over. Fireteam is full, or my internet connection has a problem (it doesn't) teams I'll go from full to empty. It tells me teams are full when they show empty, then never updates. I'm on a Galaxy S21 Ultra. It's been terrible for a long time.