CSR IN ONYX SWAT.

I am seriously fed up with this games ranking system in matchmaking. I don’t know whether it’s a bug or if it’s intentional, but my CSR is stubborn as ****. Earlier today I got the rank of Champion, only to lose it because of bad teammates. To solve this, I formed a party of decent players I had come across in my previous matches and we were tearing it up. 4 wins later, my CSR doesn’t move AT ALL, but we we lose a game and then it goes down. What gives? Has anyone else had this problem because I can’t see it being spoken about anywhere.