stabbyI myself have changed some values for this purpose, though I'm on Windows 7 using Out of Your Head for 7.1 surround virtualization. Here's what I use, but testing this stuff is a pain and I'm not sure about all of these...the general idea is to get rid of all spatialization effects that are intended for stereo output. Would be very interested in some thoughts:
snd_surround_speakers 7 // or 5 for Windows 10, it seems dsp_enhance_stereo 0 dsp_slow_cpu 1 snd_spatialize_roundrobin 0 dsp_speaker 0 dsp_water 0 dsp_spatial 0 dsp_facingaway 0 dsp_room 0
I'm not at home at the moment, but I know you can remove all those commands and just disable DSP everywhere with one of these:
"dsp_vol_5ch" = "0.5"
"dsp_vol_4ch" = "0.5"
"dsp_vol_2ch" = "1.0"
Great commands if you want to set a tiny bit of dsp, or want it completely off, etc. I'm unsure if 7 channel has a command, or if it's shared with 5ch, but these will remove all DSP, as it acts as a master volume for all DSP from what I understand. Just don't use "dsp_volume", as it constantly resets if maps have different soundscapes and you enter/exit them. Unless you want to bind it to a commonly used key.
I don't know if it's just me, but disabling dsp entirely makes sounds at the back really low. So some DSP is good if you have same issue as me. If you put too much, it throws off the positioning, so you have to dial it in perfect.