Just knocked out a 100mm statue of ganesha at 0.24 layer height (try to keep it in multiples of 8, the stepper motors prefer it apparently).
Bang on - zero signs of any issue.
I mean none - got a hindu mate who's just bought a new house so thought I'd make him a ganesh :-)
It's as clean and smooth and shiny as any print you'd see.

Meanwhile I can find nothing wrong with the flashforge's extruder. If I feed from the control panel it extrudes a straight piece of filament with no problems. So the nozzle hasn't got an issue.
But when i go to print, it just grinds to a halt about halfway through the first layer.

Am I in the twilight zone ?

Right going to try a ganesh in wood now.
You can never have too many elephant headed god statues :-)