I banned pulse from my system. Max quality settings in gw2, listening to spotify, youtube, discord, vlc.. no audio problems ever. Just say with me: audio daemons are evil and utterly useless for 90% of the userbase. (since discord hard depends on pulseaudio - so stupid - I use the apulse wrapper with it. Works.) I realised that half of my config were already defaults, so I've trimmed it down. Haven't narrowed the culprit down yet.My only problems rise when listening to something locally stored via mpv. thing is: pulse&co are actually absolutely unnecessary. Alsa has dmix on by default, which takes care of several sources. To this day I have not understood why distros insist on forcing this quality destroying, problem creating mess down everyones throat. I have ditch pulse as well ;)Use pavucontrol, run both mpv anf GW2 and check which no showing in Playback tab in pavucontrol One fix for app who use alsa instead pulse, is setting ~/.asoundrc and adding: # Default to PulseAudiopcm.!default { type pulse fallback "sysdefault" hint { show on description "Default ALSA Output (currently PulseAudio Sound Server)" }}ctl.!default { type pulse fallback "sysdefault"}If you in Arch you can install https://www.archlinux.org/packages/extra/x86_64/pulseaudio-alsa/ instead of changing ~/.asoundrc