It seems to me PSG players bored to always win the competition. So they think even playing without motivation could still give them League one trophy. What a pathetic league.
I assume rumours about Qatari owners willing to leave the team might affected them. PSG used to win the league regardless of their performance because the other teams are always failing, but interestingly in the last two rounds, PSG got 2 draws while Marseille, just behind them, won two. Of course, Monaco is one of the team that I said previously that they were failing and they did miss 3 points a game before, otherwise they would be even closer to PSG.