f.lux on Mac OS performs slowly

  • Hello,

    I have a 2015 Macbook Pro Retina with macOS 10.14 Mojave installed. I have the AMD Radeon M370X graphics chipset. I've noticed that enabling f.lux on this laptop significantly reduces performance for windows drawn with hardware accelerated graphics. Specifically I tend to see long pauses before these windows redraw with f.lux enabled but not when it is exited. Is this a known issue and does anyone know of any workarounds?


  • On this machine f.lux might be writing a color profile - so the first thing I would try is to disable it:


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