Yes, 7.1 surround sound can be very beneficial for PUBG as it allows you to accurately locate the direction of sounds in the game. This can give you a tactical advantage by making it easier to find other players, footsteps, and gunfire. The immersive nature of the game can also be improved by using 7.1 surround sound. It's important to remember that 7.1 surround sound is not necessary to play PUBG, and many players can have a good time using a stereo headset. Whether you believe the additional advantages of 7.1 surround sound are worthwhile depends largely on personal preference.