Problem with using .8 nozzle and Wall Line Count of 2

[blkprometheus 0]

I'm using Cura 4.71 on Windows, and using an Anycubic Kossel Linear Plus with its latest firmware.  I'm trying to print an object using a .8 nozzle, because with a .4 nozzle it would take over 24 hours to print, and there isn't much detail in the object.  I normally print with a .4 nozzle and a wall count of 2.  But i unintentionally reset the wall line count to 1, saved the resulting job and printed this object.  When looking at the object afterwards, I noticed that the infill pattern was very visible, and after checking the Cura settings, I realized that I'd set the wall line count to 1.  Otherwise the object printed fine from what I could see.  After setting the wall line count to 2, saving the job and printing it, the first few layers were fine, but after that I got a lot of spaghetti.  I had a layer height of .4mm.  I'm using PLA, with a printing temperature of 210 to allow for more filament to be melted due to the larger nozzle size.  I'm writing this from work, so I don't have any of the other Cura settings to provide.  I've done some Google searches, but other than making the layer height no more than 80% of the nozzle diameter, I can't find any other information specific to additional settings when using larger nozzle sizes.  Any ideas/recommendations?

 

Thanks