VRChat Version:
2021.1.1p1, build number 1040 (and previous)
The in-game volume sliders fall off more quickly than they should. At 75%, VRChat's volume is decreased by 10 dB . At 50%, the volume is decreased by another 10 dB. Et cetera.
This makes VRChat's audio sliders difficult to use, because most audio sliders to not work this way.
In most software (i.e. Microsoft Windows), setting the volume to 50% halves the (perceived) volume. Most users need to regularly adjust VRChat's world or avatar volume, but VRChat's audio sliders do not behave as users would expect.
Steps to reproduce:
1 Enter a VRChat world which contains an audio source (playing noise or a sine wave).
2 Reduce the audio volume, while listening to (or measuring) the amplitude of the sound.
3 Check the peak amplitude in dB at each 25% increment.
My (crude) measurements:
100% -12 dB
75% -22 dB
50% -32 dB
25% -42 dB