I hope to hear some good news from Anet regarding this question For real, maybe they redo their entire mac client with the Metal API for the new expansion. Highly doubt its worth the time and money investment from them, but one can dream.
This achievement is AWFUL I've tried it 3 times, each time the icon disappears on the second to last scene - the final scene with Balthazar doesn't even start so I don't know what the deal is. Completely wasting my time here and losing any sort of fun with stuff like this.
Just throwing this out there too - Nvidia Geoforce NOW works well with GW2 if you have the bandwidth/internet for it. Heard people running max settings just fine on a 2013 laptop.
Any idea on why OpenGL is such a performance killer? Have seen multiple comparisons of DX to OpenGL with them being pretty similar in terms of their demand and performance.