I don't know if Nordeus has changed the engine but for sure something is different.

In my league there are 2-3 teams with 21 to 24 quality that keep on winning all their matches.
My team is 34 quality and I have the same chanches to win 8-0, to draw or to lose 0-1.

Yesterday, in cup quarter-finals, I lined up a defense made by 4 players 6* and one 7*, all with SA.
The mentality was defensive and I had no red arrows.
And, as often happens, I conceded a gol (to a 4* MC).

During the last season I used to win all matches with 4-5 gol margin.

It seems the "random factor" has been increased.