This is why 2 season ago I did minimum training while finishing top 3 in league so that my team quality would be lower. I went from starting around 115%-120% to starting the season around 105%. It made a large difference, although you do run the risk of getting stuck behind a manipulator. I am winning the league this season, but I lost my cup to a +14% team and I lost Super League to a +17%. Losing Super League was the frustrating part since I intentionally finished 3rd in the Champion's League group stage to avoid the +40% teams lol.