From LATAR to BSC --->  . Except maybe small traffic after Caltex/KFC at the 4-way intersection during the evening when people going back to their home. Most cars at the traffic light are going towards Eco & Puncak Alam (right turn). No problem going into BSC (left turn).

From BSC to LATAR ---> 

From LATAR to GCE towards Shah Alam ---> 

But...

From LATAR to NKVE --->  minor setback during the morning rush hours for people who mainly uses RFID/Smartag when they exit LATAR and merged from the left into NKVE just before the toll booth. RFID/Smartag lanes are at the most right/middle lane and going to that lane will be a challenge because the left lane has been blocked by a long queue of TnG users coming from GCE. Maybe if they put the TnG lanes at the right/middle lanes would've help solve or minimize this problem 

From NKVE to LATAR/GCE --->  bottleneck during the evening at NKVE (Shah Alam/Klang GCE exit) toll booth plus heavy traffic and slow moving along NKVE just after the Jejantas Sg Buloh until the Shah Alam/Klang GCE exit. It is better and faster if exit at Sungai Buloh then use the old road (Jalan Kuala Selangor).

Anyhow regardless where you live i.e. BSC, Elmina, Subang Bestari, etc...the rush hours traffic will be the same all over the Hwy/roads. If possible, the best way is to planned our journey early to avoid those timing.

Shah Alam/Klang Guthrie Exit - LATAR
---> you'll usually get stuck in a slow moving/heavy traffic after you had pass the Sg Buloh exit all the way until the Shah Alam/Klang Guthrie Exit.
---> things will get worst after that because you'll spend more time queuing at the bottleneck toll booth.

Sg Buloh Exit - Jalan Kuala Selangor
---> slow moving around The Store area due to the traffic at the flyover towards Bkt Rahman Putra/Bandar Baru Sg Buloh.
---> slow moving before Tapak Pasar Malam Paya Jaras due to the pasar malam (every Tuesday & Thursday).
---> slow moving at the T-Junction of Saujana Utama entrance/traffic light.

Try both route to see which route is better