Need Help Taming Varioshore Foaming Tpu Printing Set Up: Creality Cr-6 Max with Metal Dual Gear Extruder, Metal Swiss Hot End, and Community Software. Settings: Please review the settings in the attached images Nozzle 0.4mm I keep getting a bunch of upward strings after a while that looks similar to a partial jam/ or poor filament flow.  This usually starts showing about 1/2 hour into the print.  I've already tried solving this with different retractions settings but nothing worked so far. Here are the retraction settings I've used.  10mm/15mms 04mm/45mms 05mm/45mms (This one is in the photo/ I've had the best luck with.) Side note: I can print a test cube with no problem. It's just complex items and shapes.  Second, the filament has a tendency to under-extrude if I leave the flow and feed rate at 100%. This is only for the complex items. This is not true for the cube/simple geometry. Because of this, I increase the feed rate to 125% and flow to 150%  for the complex 3d prints.  Any insight into printing this material would be amazing.  Much thanks.