How to adjust HleAudio per game playback settings with HleAudio.lua.
(1) copy HleAudio.lua script file to the same folder as HleAudio.dll
(2) Run pj64 2.x or pj64 1.6 HleAudio fixed version.
(3) Edit the OnRomOpen function of HleAudio.lua (please reference HleAudio.lua for commands to adjust settings.)
(4) Hard reset emulator to run modified Lua script (Lua script will reload each time at audio plugin 'RomOpen' function)
That's it.