I’ve been printing the same part or some time now while changing different settings. The most recent setting I changed was combing from ‘All’ to ‘No Skin’ and now I’m getting delamination on the first layer after the supports are made, but then a perfect print after that. I changed the combing setting because it was overriding the Z Hop setting and causing the nozzle to drag across the print. This change fixed the nozzle drag but after a few prints I started experiencing delamination of just that layer. If it helps I’m using the Lulzbot Cura Slicer and a Lulzbot Mini.