I’m kinda curious. I’m in diamond at 3.2k and I pretty much get 24 sr every single game, and lose 24 or 25 sr for a loss. When I was in plat a long time ago, I don’t ever remember getting much more than 28 or so sr. I certainly remember getting like 20 sr sometimes!
I have no idea. It seems random. If it has you “set” it seems to hover around 25. If you have a fresh MMR. You can easily get 50 a game. But that normalizes relatively fast.
In general I’ve lost and gained 25sr for each respective win/loss. There are outliers (ive lost as much as 30 or as little as 5) depending on my performance, but those are to infrequent to be considered relevant.
It seems like it depends on the player, but I have no idea how it decides. I had to play around 100 matches with a 70%+ win rate to climb through Gold, because the SR system was fighting so hard to hold me back. I think it’s reasonable to say that my performance was not the issue with a win rate that high.
For me, wins were approximately 20 SR, losses approximately 30 SR, with slight variation for both. I can’t say if that’s changed recently, because I stopped playing Competitive altogether.