Halo Multiplayer problems

I just installed a new router for myself (Nighthawk XR300). The internet is now faster, but when jumping into social or ranked halfway into the game, shots weren’t syncing by the split second, and then BOOM, it somewhat I got forced out of the match and force me to wait around 1-2 minutes until I got into the scoreboard. Is there any router setting recommendations so I can finish the match without any problems? Or any solutions?