I tried a regular PLA, same problem on the 0.8 nozzle. Turns out this was the issue, my filament dryer to extruder mod:
(Pull filament direct from a dryer - reverse bowden - #3 by KalciumKing)
I got rid of the mod, and was able to print a benchy with a 0.8 mm nozzle in regular PLA and the marble white PLA.
I have gone back to a 0.6 mm nozzle, fingers crossed it doesn’t clog and I can get nice prints out of it.