I don’t have the 0.8mm nozzle, but I suggest manually extruding and retracting for debugging if there is a faulty nozzle or settings. If the pop continues, increase the temperature slightly. If it persists, it is likely to have some issues in the nozzle, filament, etc…
If not, you need to calibrate the filament. Typically, popping is associated with wet filament, but it can also be other things, such as extruding problems related to settings. My experience with the 0.6mm nozzle shows that BL profiles are not as optimized as for the 0.4mm nozzle.
A few questions: Did you use the same spool with .8 and .4 mm nozzles? Did you calibrate? Did you set the 0.8mm nozzle in the printer?