Sure do! I'm actually glad that you asked me for the source, since this is one of those situations that changed, but most people tend to follow the old rule of thumb. (Kind of like how 9x reports used to carry more weight, so you still have players asking for reports, when it doesn't work like that anymore.) I'd learned of this system changing after seeing some things that Deep Terror Nami posted, and a couple of things that Lyte had said a few years back, but unfortunately, I don't have access to most of the things Lyte posted off-Boards.
One of the first posts that comes to mind is this one from Deep Terror Nami from a little over a year ago.
[{quoted}](name=Deep Terror Nami,realm=NA,application-id=ZGEFLEUQ,discussion-id=le6rYEIB,comment-id=00020000,timestamp=2016-10-16T13:34:24.687+0000)
A lot of newer information suggests that the 3-month thing changed to a system similar (but not connected to) Hextech eligibility, where you only drop by playing games and showing reform.
And when asked if he had a source on it, this was the reply:
[{quoted}](name=Deep Terror Nami,realm=NA,application-id=ZGEFLEUQ,discussion-id=le6rYEIB,comment-id=0002000000000000,timestamp=2016-10-16T13:45:30.894+0000)
It's not a specific source, it's more like a collection of vague tidbits that add up, including internal chat with some of the player support guys we have in the volunteer Discord (though there was a support ticket that more clearly stated this was the case, and I never saved it). Like you said;
Even if you got Tantram to answer you directly I don't think you're getting more than that. It's not worth pursuing imo, just encourage players to focus on reforming.
(The volunteer Discord being an avenue that the arbiters and other Boards helpers have for direct contact with Riot for information and clarification.)
But the simplest, and most direct source that I can give you is this one from Riot Tantram. It's also one of the more recent ones, at roughly 8 months old.
The question asked by Deep Terror Nami was:
[{quoted}](name=Deep Terror Nami,realm=NA,application-id=ZGEFLEUQ,discussion-id=t4BNHARj,comment-id=00030000000000000002000400000001,timestamp=2017-05-09T23:20:45.487+0000)
Hope you're still around. I'd like to know if the average time to decay one punishment tier is different per tier, as in, does it take longer to go from just being 14 day banned down to the 25 chat than it does to go from a 10 game chat restriction down to a clean status?
The answer from Riot Tantram was:
[{quoted}](name=Riot Tantram,realm=NA,application-id=ZGEFLEUQ,discussion-id=t4BNHARj,comment-id=000300000000000000020004000000010000,timestamp=2017-05-09T23:26:58.812+0000)
More severe behavior and behavior histories take longer to get to a clean slate than a less egregious/persistent behavior.
If you look at that thread, there's a couple of comments there, and different versions of people asking the same question.
If I may add my own opinion, and this part is purely conjecture, players who are at the 14 day suspension tier as a result of moving up the punishment ladder are much more likely to be periodically reported, because they have a well-established pattern of toxic behavior. And that will also cause the decay time to increase. I base my opinion upon a Riot Support response to a ticket submitted by a player, referenced in this thread.
{quoted}
Hey Summoner,
For an account's negativity to decay, it takes both a function of time and games played where no toxicity is exhibited to reduce, and effectively reset, the hidden "toxicity level" of an account.
That said, as each account is unique, even with a hypothetical query of perfect behavior I would not be able to calculate how long that reset would take. Nor do other positive games matter if an account continually will have negative games every so often as this account has.
Furthermore, a prior history of positive behavior will also have no standings on this case. Just as a lifetime of not doing crime wouldn't suddenly make committing a crime okay.
Templar Iytsuna
Player Behavior and Game Support
"Let's admire me"