I had problems with spongy prints while I was using Cura 3.2.0 and while trying to resolve the issue I upgraded to Cura 3.3.1. The spongy prints was due to a blocked nozzle and when I replaced that my prints had a gap between rows of filament but not thin like before. There was certainly enough filament being extruded. I use an Anet A6 and the next thing I did was upgrade the extruder to an E3D. Again it is extruding a good flow of filament but the gap between lines in the solid base is still there. The only thing common to these is the Cura upgrade. Is there a setting for this in 3.3 or should I revert back to 3.2?
I had no problems upgrading to 3.3, my printer and all my previous custom settings were still there.
