Wavy Prime Tower outline for first couple of layers

Hey all,

Anyone have any idea why I would have these wavy outlines in my prime towers?

wavyOutlinePrimeTower

The curious thing is that lines seem fine in the actual models, and through the rest of the prime tower, just the first few prime tower layers seems to show this.

Also, unsure if related, but I just added another AMS (and AMS 2 Pro) to this P1S printer and switched from an AMS Buffer to an AMS Hub (also updated firmware for both the AMS Hub and the new AMS) and I also noticed that even with the same filaments I was using before these changes, I am seeing areas of lower extrusion as if the flow rate had changed.

Can changing from a Buffer to a Hub result in flow rate changes? Is this related to the wavy outlines I see in the prime tower?

Thanks, all.