Summary of the bug :
When using the machine gun, bullet hit effects on the ground, on the walls or on enemy opponents are not shown.
Which version of Grip were you using :
When does this happen : (after launching the game, in the menu, while racing, ...)
In bumper cam when using the machine gun powerup
On which track did it happen : (Industrial, Playground, ...)
On which speed did that happen (if related to physics) : (Low, Medium, High)
How often does this happen : (Always, very often, occasionally, could not make it happen again)
How to replicate the steps (if reproducible) :
Use the plus sign to get "into" the car (bumper cam)
Use the machine gun power up.
More details :
Your specs :
32 GB ram
2x GTX 780 SLI
Any screenshot, or link to a video showing the bug :