There was something said about this during the Murray match. The commentator said that the same person did these courts as in Paris-Bercy and that they will be the same. One commentator said that they (the ATP, I guess?) wanted to keep the conditions the same. The other commentator remarked 'these are the top 8 players and they should be able to adapt' or something like that. Conversation took place in the first half of the first set, if anyone wants to look for it.
Considering the speed of the court, I could guess the person making the courts was the coaching uncle of an currently injured player. Too bad his newphew couldn't play, he would've loved these courts.