I've been scratching my head for a while wondering what was going on and basically, Windows and Mac behave completely different when it comes to blending modes. Below are examples of what I mean. They are from exactly the same document.
This is windows
This is mac
There are some differences that I can attribute to screen settings colour profiles etc, but the main eye shape difference is shocking. The layer blend mode is set to 50 subtract. What's the cause of this? Is it inherent to the OS? Can it be fixed?? I have tones of generative work done in Resolume that is suffering from this and similar problems. I want to cry!