Back stabs weren’t tweaked according to [2.0.10] patch notes, but I feel like I definitely should’ve heard a sound from this one. Feels a bit off since 2.0.10, maybe placebo, but doesn’t seem consistent currently.
Stereo should be the starting block for troubleshooting. No special or surround.
YMMV though. We’re a bit sick of windows updating stuff too. We might look to add specific in-game settings to override their nonsense implementation of sound stuff.
There is a bug with sound. Typically, it is lobby specific. You can test this by resetting the lobby when you do not have backstab sounds. If you reset the lobby, 9/10 times you will have backstab sounds for the following game.
Try enabling ‘Spatial Sound’ and see if there’s any improvement.
You may also need to change your ‘Speaker Configuration’ within the Vermintide 2 ‘Audio’ menu, to reflect your set-up (‘Stereo Headphones’ or ‘Speakers’).