Start synchronization problem in Multiplayer

Hello. we are improving more and more problems with synchronization on the start of the races. I witness it once on the Britain GP and Two times on the Russian GP. I know the game add the gained time at the end but it is not fair at all. in the video bellow you'll see the car starting from P12 and getting in P1 before turn 1. The game add 2 or 3 seconds on is race time so he finish 13 seconds behind the leader but he would have been way more then 13 seconds behind if he had start in the traffic like he was suppose to.
The lobby settings were:
no practice
Short qualify
50% race
manual start
manual pit entry
 

Is it possible to look at it and fix it in the next patch because that one cost a podium position. @Lozzy @jennyannem