Incorrect all time csr displaying on waypoint

Just been reviewing the csr records of my clanmates and noticed a few inaccuracies. For one, one friend had a 1874 csr in swat. It displayed correctly until the other day when it has been dropped to 1833 in arena. Then i checked my all time csr. Last season it reached 1809 in ffa (verifiable on halotracker). Now it reads 1803 in ffa (2 games behind my actual rank in ffa as it was 1803, went down to 1800 the next game and then up to 1815 straight after). Either way, it is completely inaccurate for my friend and for me.

Has anyone else ran into this problem?