@n321 It's called rating deviation!!!
Lichess wants to make it so that your rating is guaranteed to be within a certain, small interval. If you have greatly improved all of a sudden, then you will gain points slowly with this rating system (if you had played a lot of games before), but this rating system still works about 90% of the time.
chess.com and lichess have quite similar rating systems (they actually both use Glicko-2) - what you said in #147 is false almost in its entirety - you still only gain about 4-8 points per game once your RD stabilizes (meaning you have played enough games) in
chess.com as well as lichess.
No rating system is perfect.
@notzmv is right: it's a shame that nobody has even a basic knowledge of how these rating systems work.
BTW, don't tell me that FIDE is a more "realistic" rating system, because:
1) FIDE rating system has its own flaws.
2) FIDE calculates rating only based on tournaments.
3) Glicko-2 works in most cases, especially because leaving and rejoining as a much better player in a few months is not a common occurrence (well compared to the entire playerbase on lichess, nor is suddenly improving like crazy in like a week) and many people on lichess quick-match and/or use the lobby instead of lichess tournaments, making FIDE hard or impossible to use here on lichess.
Simply put, FIDE works in tournaments and Glicko-2 works for online chess.
Each rating system is fine tuned for its own purpose, but there is no perfect rating system, so there is absolutely no use complaining that the rating system is broken - the rating system is NOT broken, it's just not perfect. But please tell me if you found a better rating system meant for online chess (where people don't only play tournaments) and sure, I'll gladly ask the mods (eg
@Toadofsky ) about it.