Iām going to copy the whole thing here so we can comment:
I labored through 40ish games on a test account, playing in a very particular way to test the system. For reference, Iām an ok player, nothing special, but good enough to notice what Iām facing. But no need to take my word for it, we have full breakdowns from the Halo Infinite MM API, organized amazingly courtesy of ā¦
Letās get started.
Hypothesis: there is a hidden MMR rank that affects all of your games, social and ranked, and therefore it should be possible to tank your MMR in social games to give yourself easier ranked games.(Side hypothesis: this effect occurs even after placement matches.)
Method: I started a brand new fresh account, and did the following:
- Go into 10 quick play games and lose all of them terribly, going 0-10 or worse.
- Play Ranked and actually try, raise get placed.
- After placements, play a few more Ranked games to see where the system is putting me.
- Now go back to social, and tank another 10 games with abysmal performances.
- Finally, go back into Ranked and see what happens.
AS YOU CAN SEE HEāS ACTUALLY TRYING
For reference, here is my test account. Every match you can see the average CSR (the gold/plat/diamond/onyx rank number) and MMR, but these are only team averages, as the API available does not provide individual hidden MMRs.
https://leafapp.co/player/II+Ryot+II/matches
Phase 1: Tank 10 social games Not much to say here. I had to waste about 2 hrs to do this properly, I wanted to really make sure that I ran out and died. My teammates and opponents progressively got worse and worse, but on average my teammates got better than my opponents. In fact, it got lopsided to the point where around game 7 or so it became hard to lose, because even if I went 0-20 in oddball, the system gave me good enough teammates to 3v4.
AS I POINTED OUT, BECAUSE A NON 50-50 W/L RATE IS UNACCEPTABLE
Phase 2: Play my 10 placement matches Oh boy, this was crazy. My very first ranked game, I went 45-1, and that one death Iām pretty sure was from a team nade. I got medals Iāve never seen in my life.https://leafapp.co/game/c3df0b9e-9748-4ce6-b88e-51b320ed6843
But what actually matters over these 10 games is the following: the average team MMRs, both mine and opponentsā, kept going up. The games also got harder, and my K/d got worse and worse. Hereās the sequence of 10 games summarized:
Game 1: my team MMR = 293, opponent team MMR = 298, my K/D = 45:1
Game 2: my team MMR = 407, opponent team MMR = 411, my K/D = 8.67:1
Game 3: my team MMR = 566, opponent team MMR = 623, my K/D = 8:1
Game 4: my team MMR = 545, opponent team MMR = 552, my K/D = 11:1
Game 5: my team MMR = 430, opponent team MMR = 430, my K/D = 9:1
Game 6: my team MMR = 565, opponent team MMR = 593, my K/D = 5.5:1
Game 7: my team MMR = 530, opponent team MMR = 522, my K/D = 12:1
Game 8: my team MMR = 784, opponent team MMR = 782, my K/D = 13:1
Game 9: my team MMR = 891, opponent team MMR = 909, my K/D = 16:1
Game 10: my team MMR = 1107, opponent team MMR = 1301, my K/D = 3.57:1
You get the idea, as the MMR goes up it gets marginally harder because opponents get better to the point where they can catch me making mistakes.
MMR RISES AS HE WINS AS IT SHOULD
Phase 3: Post Placement Matches - and I got placed Platinum 3
Alright hereās where it gets interesting. The CSR I got at Plat3 is around 1000-something. But the MMRs I played my next few games in were really tough! In fact, at Plat 3, I lost the next 3 of 4 games. I still slayed really well, but the system gave me teammates that were much worse than the opponents. But guess what? Because my losses were all big slay games, I lost no CSR. Hereās how the next 4 games went:
Game 1: my team MMR = 1304, opponent team MMR = 1245, my K/D = 2.73:1 (loss, -0 CSR.)
Game 2: my team MMR = 1225, opponent team MMR = 1151, my K/D = 3.67:1 (win, +15 CSR)
Game 3: my team MMR = 1320, opponent team MMR = 1368, my K/D = 2:1 (loss, -0 CSR)
Game 4: my team MMR = 1405, opponent team MMR = 1411, my K/D = 2.32:1 (loss, -0 CSR)
THE SYSTEM PLACES HIM IN HIGHER RANKS MATCHES BECAUSE IT THINKS IT BELONGS THERE EVEN THOUGH THIS IS NOT TRUE
See whatās happening here? My individual performance has the system constantly putting me on and against higher MMR teams (meaning my hidden MMR is definitely rising). What we also see: as a Plat 3 Iām playing more Diamonds than Plats, and in every case Iām top frag by quite a bit. My losses lose me nothing, my wins give me huge gains.
Phase 4: Tank more social games. Letās see if this works after placement. I lost about a dozen or so fiesta games. Or rather, I tried to lose them, eventually the system started giving me really good teammates who could carry me going 0-16. Sometimes it was a fun race trying to lose faster than they could win. We won a 50-49 and I was pissed. Lol, sorry for ruining a bunch of pplās MM experiences lately, but itās for science.
AGAIN AS I POINTED OUT, BECAUSE A NON 50-50 W/L RATE IS UNACCEPTABLE
Phase 5: Letās go back to ranked and see what happens.
Game 1: my team MMR = 1050, opponent team MMR = 1034, my K/D = 18.5:1 (win, +13 CSR)
Game 2: my team MMR = 1218, opponent team MMR = 1199, my K/D = 9.5:1 (win, +14 CSR)
Wow, and there you have it. I had a ranked and placed account, I then threw a dozen social games, and Iām playing in lobbies 400 MMR lower where Iām fragging like Iām playing bots. Interesting that the next game quickly jumped up the average MMRs involved after I dropped a 33:2 performance lol.
WHY? SEEMS LIKE A GOOD THING THAT IT ADJUSTS QUICKER IF YOU PERFORM BETTER
We canāt figure out the exact numbers involved here though. MMR seems to move down more slowly, and re-adjust to your good performances quickly. For example, throwing those 12 or so fiesta games moved me down from 1400ish lobbies to 1000ish lobbies (400 pts over 12 games). But as we saw in Phase 5, I quickly went up 150 MMR pts on average after just 1 high performance.
12 GAMES IS A LOT BUT NONETHELESS ITāS POSSBILE
Results and Analysis:
Yes, this is broken. You can sandbag in socials to get easier ranked. How much easier? Itās hard to say. If Iām a 1600 Onyx on my main, can I use this method to get to 2000 Onyx (CSR)? Maybe with a lot of grinding, maybe not. I donāt really care personally. But thereās 2 interesting implications here:
From a game theory perspective, if you want the highest CSR possible (e.g. rank, Diamond, Onyx, etc) then you want to use this sandbag method, and you want to avoid slaying hard in bot matches. You want to be better than the average MMR games youāre playing, that way, if you win, you win big (because youāll probably be top frag), and if you lose, youāll lose very small as top frag. Also, if you throw in social, because of the team MMR matching, chances are youāll start getting better teammates (relative to your opponents) because the system wants to give you help.
The other interesting idea is that if you want to play against pros in matchmaking, go slay a bunch of bots on a new account then get into ranked. Your 2000+ MMR might get you matched up against Optic or C9 players
Well, the system probably has some breaks in place to not be that extreme, but Iāve definitely seen unranked accounts who have tested this bot method match against the likes of Cratos, Swish, and other pros.
Conclusion:
Matchmaking by 343 is really stupid. Tons of players who over-played casual games will be having a lower CSR than they should in ranked, and a terrible experience getting dunked on. This linkage of social and ranked global MMR means that now we know for a fact that sandbagging works.
If youāre reading this particular reddit, Iād recommend just not giving a s* and playing your games to improve. Maybe try shooting a bunch of bots with 20:1 K/Ds if you want a higher chance of placing into pro or semi-pro matchmaking lobbies lol.
Anyway higher MMR is always better but to lower it means getting easier matches and consequently better K/D. It also means by the tests that if you lose you donāt get punished as the underdog and if you win you win a lot.