Speech volume changes self to 0%

[CommanderZx2]

I'll be playing without issue and then suddenly I can no longer hear any dialog. I exit the game to find that the speech volume has been set to 0... It keeps doing it and I have no idea why, I have to change it back to 100% to hear it again and then the game resets it to 0 while playing.

[delmoth]

Had the same problem. I had both the demo and the full game installed, uninstalling the demo fixed the problem.

[mowren]

Most likely you pressed 'T' accidently if it's only the speech volume (and 'M' if it's all volumes). Pressing 'T' is a shortkey for switching between 'Subtitle & Speech', 'Speech only' & 'Subtitle only'.