Play in a group and you can finish it in about 5-6 hours thats how me and my friends all got it done quickly we were also lucky tho too just because there were a lot more “new” comp players who treat it just like qp. Like others have said you get bonus points for playing in a group and that helps a lot. I hate open que comp but that might help ya too if you dont mind it just gotta know what team builds to run