I just tested and while 0 works, -1 does not. Sounds continue to behave as if using an environment.

Not sure if that's intentional or not.

Using 1475

So, for example going from 20 to -1 results in 20? Meaning, once you use sound.environment, it's impossible to turn it off?

0 has it's own different effects and reverb so setting sound.environment to 0 produces different results than if you don't modify sound.environment at all in a project.

Just wanting to clarify that, once you use sound.environment in a project, there's no way to set it back to the way things sounded before you modified sound.environment?

I'm a bit confused but I'll just try to reformat what I'm seeing, but I'm unsure if it's a different bug or if it's an extension of what caused this issue, so I'm putting it here:

Without using sound.environment, sounds have no reverb or any special effects.

Using sound.environment=0, sounds now have some reverb effects to them. Defined in the docs as "generic".

Using sound.environment=21, sounds have the "Sewer Pipe" effect.

Switching to sound.environment=0 goes back to the generic effect.

Switching to sound.environment=-1 does nothing, and it keeps the last used environment.

Once you set sound.environment to anything but -1, it seems there's no way to stop using them. All you can do is go to 0 but that's just the least expressive of the effects, rather than being no effect at all.

I'm unsure if this is intentional or not.