The last four days multiple people and myself have been experiencing going up only 1 csr a game if we are lucky. I went on a 15 game win streak going up only 1 or 0 csr a game. But losing games is a completely different story by dropping 15 csr. Makes sense
Please see the latest and the previous 2 feedback topics for details about how the ranking system works, Dr. Menke has detailed out the answers to your questions