I don’t know if its just me or so,
But he can occurs than when reloading the Hollunds 880, no ammo are being actually loaded.
The gun he stuck in the reload animation, and it can crash the game (Return to lobby without error message)
When it’s occurs, doing a fast melee attack cancels the animation, and you can reload normally at this point.
Tested with the card : AURA H42 NITRO CLOSE ASSAULT
Don’t know for the others.