this is what i have:
dsp_enhance_stereo 1
dsp_slow_cpu 0
snd_async_fullyasync 1
snd_spatialize_roundrobin 0
snd_surround_speakers 0
snd_disable_mixer_duck 0
snd_legacy_surround 0
voice_loopback 1
snd_mixahead .07
windows_speaker_config 4
snd_cull_duplicates 0
voice_steal 2
snd_pitchquality 1
voice_buffer_ms 250
snd_noextraupdate 1
snd_defer_trace 1
snd_async_spew_blocking 0
dsp_room 1
dsp_facingaway 31
dsp_speaker 59
dsp_water 16
dsp_spatial 40
snd_lockpartial 1