Are you referring to the cylinder deactivation that happens when you pull in the clutch all the way? Because in my case, it’s got nothing to do with the clutch. The engine boggs in any gear if the rev range is between 1-3k RPMs. Then as soon as it passes 2.8 - 3k, there is sudden power which can be a bit scary. I am getting used to it and controlling that part of the rev range with the clutch to avoid the jerkiness.
