On PS4 the game is differently balanced. The spawn rates are a lot lower (Someone on the PD2 discord said max 28 on hardest difficulty with 4 players) and the player also does less damage. This makes for a much more enjoyable experience imo.
I would love it if someone with the technical know how could make a mod that re-balances the PC version to be in line with the PS4 version.
Maybe increase the enemy health to compensate for the higher player damage output on the pc version could be one way of handling that aspect instead of re-balancing every single weapon.