Hello,
We have found a very major bug in the physics engine.
If you hit around 230km/h in a certain direction. It's will give you a supersonic speed.
It only happens if you face a specific direction.
In Expansion, most of our helicopters go over this km/h, so the bug happens every time.
This is a link to the video, to show the bug: https://streamable.com/g5qmv5
This is the PBO that should be loaded. It's just over-boost the performance of the hatchback so you can hit the 230km/h.
Just do in Chernarus
GetGame().GetPlayer().SetPosition("13384.2 5.98 5289")Spawn the hatchback on the road, and go toward North, so Berezino.
And you will see you will be stopped around 230km/h, and when you will not touch the ground anymore, you will see an amazing supersonic speed.
If you test to go to the south with the vehicle., instead of the north, you will see the bug doesn't occur and you can go over 300 km/h.
Yes as said above, we're forced to limits helicopters to go bellow that speed due to this bug
There exists some code in the game that means that if the vehicles forward direction is within some small delta of "0 0 1" (North) and exceeding 60m/s (~230km/h) then the vehicle will seem to no longer have any friction/drag applied on it.
This happens even if the wheels and body are not on the ground.
This behaviour does not happen if the vehicles forward is facing any other direction.
This can most likely be reproduced if the server were to freeze for half a second (server fps drops to 20) and you were to already be travelling at 100km/h going north.