If you are experiencing issues with KILLER INN's in-game voice chat feature, please try the following steps.
Voice Chat Volume Settings
OPTIONS → AUDIO
Check if the Voice Chat Volume is set appropriately.
Check if the Master Volume is set appropriately.
Audio Settings When the Game Window is Inactive
OPTIONS → AUDIO → Other → Play in Background
Set this to "All Audio" so that the sound continues to play without interruption even when the game window is inactive.
Voice Chat Checkbox
OPTIONS → AUDIO → Voice Chat
Uncheck the box, then check it again.
When doing this, the "Open Mic" and "Push To Talk" checkboxes will also be unchecked, so please re-enable them as needed.
Restart KILLER INN
Close KILLER INN and launch it again.
Restart Steam
Close Steam and launch it again.
Steam Settings
Steam → Settings → Voice
Check if the correct audio input/output devices are selected.
If your voice cuts out, set the "Voice Transmission Threshold" to "Off".
Windows Sound Settings
Windows → Settings → System → Sound
Check if the correct output and input devices are selected.