This has been quite proven and clearly seen at PSG every season, so that the mentality of the PSG players themselves has never been better honed because they all do not have fierce competition in Ligue 1, which causes them to always be overwhelmed when playing in the Champions League. So that's what PSG officials and coaches should build if they still want to fight in the Champions League until they get a trophy, because without building a strong mentality and skills in controlling the ball it will also be difficult for every PSG player to win a league like the Champions League.
Not having a good competition in the Ligue actually has got a way of affecting the team but then they usually get to be in the champions league almost every season so I don't think they are so poorly experienced that they will be overwhelmed playing the champions league and their performance in the last champions league didn't look like such, they aswell weren't performing poorly either so I wouldn't want to really get to think that PSG isn't a bet champions league team, at least for the experience they have been able to get to often enough is such that will help them play better.
The strength of PSG in champions league no doubt is usually shaken but in the Ligue 1 they most often try and perform better then they have been in the champions league and that is why they are usually able to maintain a different kind of consistency that helps them get to win the Ligue 1 and maintain the dominance they have in the Ligue 1 as often as they do. It's true and very important PSG tires to grow beyond the Ligue, in terms of their strength and ability to be able to further win trophies in the champions league as their strength is yet to attain that which they need in the champions enough that they will be able to win the trophy.