I can try that. However, I'm not sure that's the problem, because sometimes the graphics load fine, while other times they fail.
Some parts of the log make me grumble, since I checked inside the app package and the .ogg music file IS there...there's just a bug in how Pillars looks for the path. See the backslash before the filename? Needs to be all forward slashes on MacOS and Linux.
/Users/a/Library/Application Support/Steam/SteamApps/common/Pillars of Eternity/PillarsOfEternity.app/Contents/data/audio/mus/mus_final\mus_combat_e.ogg does not exist. The music will not play!
I haven't noticed any problems with the music, though.