Hi, I am author of glChAoS.P Please tell me more about your problem in OSX (OSX ver, GPU type?). Unfortunately I got very trouble with (deprecated) OpenGL in OSX (mostly with GLSL subroutines) and the "pure rendering" operations result faster in WebGL versoin (I believe that Chrome/FireFox use Vulkan layers) I coult test it only in 10.14.x with AMD GPU.

P.S. if you have a account, open a issue on github ;)