When playing duo first person only games but queueing solo, it happened to me in two out of two matches that the match randomly ended for me. I also noticed that the text message of someone being killed in the killfeed was red. I remembered that the same kind of message appeared, when playing duo and your mate gets killed. I concluded that there must be a big misdetermination on the server if you queue in solo for a duo game. It seems that the server saw the specific player, whose kill message was red, as my teammate and with his death my game ended as well.