I found one thing I'm interested in to see if it's affecting my extrusion multiplier calibration.
In the new 2.2 feature to set the infill multiplier different than the perimeter mulitplier, I'm wondering if that only applies to sparse infill or if it also affects solid infill.
It would seem to me the correct behavior would be for it to only affect sparse infill. The reason is that if I wanted a sparse infill and I wanted to extrude 130% so I could have a good solid infill structure I definitely wouldn't want to be using 130% for the solid layers, as that would overestrude and mess things up.
In my testing however, I've been using a multiplier on the infill but have noticed I've had to turn my extrusion multiplier down quite a bit. Perhaps this is the reason. In further support of this is my perimeters aren't extruding enough. When I have a moment I'll export some gcode files with different settings to test this.
What do you guys thing is the correct behavior and the existing behavior?