When you talk about performance numbers don’t use FPS: It does not tell a thing. Difference from 30fps to 27fps is 3.7ms. From 60fps to 57fps it’s 0.877ms. Always measure how much in absolute time some feature use. It’s not easy to calculate (1000/oldFPS) - (1000/newFPS) in your head and if you only tell the difference you can’t even calculate it.