Well, just tossing out a couple of thoughts...
You say pro setup, and that's great, but it can mean many things. If you built the bass, then you need to look at some of the more subtle construction details such as bridge position and neck angle.
Bridge positioning is ultra important. If the base plate is set too far towards the neck, then what happens when the saddles are properly intonated is that the break angle over the saddle ends up being larger than necessary. Large break angles lead to significant deformation in the hardened string core, which will kill the overtones in the string. The bridge is properly set for longest string life when the base plate is set further back towards the strap button such that the G string saddle just intonates before going off the base plate. that minimizes the break angles. If you are stringing through body, don't. Same thing.
Neck angle can be pretty tricky because you are dealing with height in the neck pocket and tilt angle. You have to shim both of those until the bridge saddles are sitting intonated with their height adjustment screws roughly flush with the surface of the saddles and the strings are sitting at the correct heights above the pickups - 7/64" at the neck pup and 3/32" at the bridge pup. Getting all that right can take a lot of putting the instrument together and then taking it apart again. But, you can't give up, because the bass won't play right until all that stuff lines up.
All of these aspects get more or less worked out on the production instruments. So, the ones in the store will play well, if they are adjusted correctly.