This is after the second layer.
I am just wondering about the dots between the perimeters and the infill. Is that good, or should I be trying to adjust overlap to lessen the “dots”?
Have you messed around with Orca Slicer’s calibration prints before? They mention those holes in their guide as a sign of under extrusion, although I’m sure there’s a variety of reasons for them. I never thought about the overlap causing them as well but it makes sense. I turned my overlap down to 10%, but now I think I should take a closer look at it.
I do use Orca Slicer and have done all the calibrations for this filament. The flow calibration is based on what the center of each coupon looks and feels like. I have not seen any calibration for the different types of overlap (bottom layer, solid infill, sparse infill). Do you know of any references to that type of calibration?
I think I misunderstood their github page on calibration, they have some of the coupons labeled as gaps and I had thought they were referring to the holes around the perimeter.
As far as overlap calibration I’m not sure. I recall someone on this forum mentioning that they thought Bambu’s default 15% overlap was too aggressive, but other than that post I haven’t heard too many people talking about it.
Is the overlap set by a gcode command, or is it done by the slicer when it generates the actual XY coordinates?
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Overlaps are part of the slicer generated G code. It just tells the printer how far to move, how much to extrude, how much to coast, retract, etc.
I was thinking it might be interesting to take the flow test gcode and modify it to test infll overlaps. Seems like it wouldn’t be too hard if the overlap is set with a specific gcode, but if the slicer determines what the proper XY coordinates need to be to achieve the desired overlap then it would be much more difficult. Not impossible, but a lot more work than added a few MXX commands in some gcode.
I did a quick test slice in Orca, one at 5% overlap and the other at 20% and unfortunately, as suspected, the slicer is generating different XY coordinates for the infill. One interesting fact I noticed while looking at the gcode, the lower the overlap percentage the more filament is used. I’m guessing this is because Orca increases the line width to compensate for the lower overlap. It’s not very much though.
This looks like an infill overlap issue. See more details here:
The code looks like it is the bottom layer. That is different than solid infill or sparse infill.
So many different settings. 
yeah i just grabbed a random section for the screenshot. all of the features are different between the two files except for the inner and outer walls.