subang to PJ.. you use which route ? Federal ? I will say travel to KD using NKVE will be better comparing to federal. But it will still be jammed pretty badly.

Entering damansara toll will already be a big jammed at there.
From there the another bottle neck will be at junction leading to 1U.
Another jammed will be at infront of 1U itself. And finally the last bottle neck will be the junction exit to Kota Damansara.

Not to forget the route in KD also farked up due to the MRT construction.
I will say prepare 1 hour to 1 hour 30 minutes of driving maybe ?