Just played a series of VSA matches myself that exhibited bizarre qualities. Reached +10 FC Champions a couple of days ago and have been -4 since then. In my last match I was plagued by totally uncharacteristic poor touches and shots. My players kept unexpectedly speeding up or losing down and my Mbappe ran in on goal without the ball even after he had controlled it on the edge of the box. No defender involved, just totally bizarre gameplay that ruined any chance I had of winning.
And this is why people are quitting. EA refuses to listen to repeated calls for improved game mechanics while all the while squeezing users for more $$$. Is it any wonder people are getting fed up and leaving?