I'm guessing it's tiredness from your players. You use High Line, High Press, Close down much more often. By 75 minutes they are probably tired.
Try the following if you have a two goal lead, or it's near the end of the game.
- Reduce mentality to Standard
- Remove Play out from the back
- Set When Ball is lost to "Regroup"
- Mid Defensive line, with Low Block
- Remove close down "Much More Often"
- Set wingbacks to either Support or Defend
You can even set when ball is won to "Counter" if you do the above, and you may find you score a few on the counter whilst they attack you. I play in Argentina also, and thins has worked well for me.