Everyone losing con and dced and we lose the game

We were in a ranked game 5v5 extremly close, we just got ahead took 2 inhibs and then at a moment, everyone started lagging and dcing, each 5 players on each team, after 10 minutes of this annoyance, our fed carry tristana clicked on the map and immediately dces after, causing her to walk into the enemy team even while they are dced they kill her. At the end we end up losing and no loss prevented. This was clearly an issue not from our end and we had no control in this defeat which we deserved to win. https://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2750302197/233818181?tab=overview P.s. at one point everyone dced from the game ( I heard "a summoner has disconected" on each of my team's members)