[IMPROVEMENT] SFX gain distort when many channels plays at same time

[Sol1vaN]

Hi!

Well, a long time ago i've noticed this. When doom retro plays many sfx emiters at same time, seems the game adds volume gain without limit this, resulting a distorted sfx volume.

Some times are more noticeable, some others not. But, i've maded a comparative versus between doom retro vs nugget doom to check, take a look:

maps tested... e1m8 phobos anomaly (less noticeable) e2m3 refinery (more noticeable) https://youtu.be/cyXld3TCZ44

...also, seems yt normalize a bit the audio gain, so is better to do this test on your own system.

Can you double check this please? seems the engine have no gain limit when this occur (multiple sfx emiters at same time playing sounds). Cheers.