Why have I just lost 65 SR for one game loss?
Did I leave too early? I left game when the ‘play of the game’ was showing?
I played Ashe most of the game.
Many factors could have been there.
Did you recently finish placements? Were you on a big winstreak? or the contrary.
Be honest. I am Trying to help.
Streaks don’t matter anymore. Given the low level (45), it was probably due to being a short time after the placements. The first 10 or so games after the first placements have double the impact on the SR, in order to guarantee that you won’t stick around at a place you don’t belong for too long (in good or in bad).