Well… obviously I have overlooked the “During loop recording, Resolution will always return to OCTAVES. This guarantees that the immediate playback speed occurs at the recorded speed” section in Looper manual, which I’m not quite sure about the meaning.
Why would the immediate playback speed occur at any different rate if the Resolution stays at where I set it at the first hand? Why the “octaves” is suitable and not the others. This makes the speed changes rather cumbersome especially when used live. On a H9 You need multiple button presses or you’re dependent on the control software (ie., your PC or tablet).