Volume Stabilizer no longer working

Everytime I try to log into any game, I noticed that the Nahimic volume stabilizer setting for optimizing my headphones is no longer producing any aubible difference. I turned the Volume Stabilizer off then on repeatedly to make sure, and I was right. My sound is still too shallow and soft. I did not have this problem in version 1.2.5. I'm using the Corsair HS60 Surround Sound Headphones and my computer is the MSI GS65 Stealth Thin 8RF.