1,how to set accessories for shooting weapons (grenade launcher / shotgun / gaoussov gun) on a key? I dont like switching scar and shotgun/granade launcher.
2, when I put the C4 in my hand I have a normal weapon and detonate the C4 some button?

Switching between the SCAR, and hologram launcher bothered me too. It's just.. not fluid.

are you runnin 2x gpu's??? try turning one off and see if that fixes the issue