Judging by the output/GUI of their GPU profiler, "complex" there is more like "complex instructions", think f32 (floating point) ops that aren't additions and m

Judging by the output/GUI of their GPU profiler, "complex" there is more like "complex instructions", think f32 (floating point) ops that aren't additions and multiplications (and FMAs), but trigonometry, square roots, that sort of thing.