What's the deal with Arnold GPU? Cycles GPU in Blender is 2-4 times faster on the same scene. GPU-only renderers are extremely fast. But I can't get any speed improvements with Arnold GPU. Almost without exception scenes render slower and end up noisier when using GPU mode. Am I missing something? I've messed around with adaptive sampling but it doesn't seem to make much difference. I'm using a laptop with a 6-core i7 and a 1070. I've attached two renders: 3m23s CPU, 4m10s GPU. CPU looks beautiful but the GPU one is FAR noisier. CPU was at 8/2/2/2 and GPU was 20AA (no adaptive sampling).