Ok so my best time on printing this 'rocket for mega scaling' scaled to 600mm on Z is right around 2hrs and 20min including time for the bed and extruder heaters to warm from room temp and for the printer to home. My extruder is sliding along X and Y at 48 mm/s while printing with a 0.8mm nozzle at 0.6mm layer height. PETG filament is notorious for wanting to print slow and I am putting it down at a rate of 23.04 (mm)3/s or the filament is being pulled in at 9.58 mm/s. If we look at travel speed this machine doesn't look so hot but if we look at extruder flowrates this machine isn't doing too bad.. And that time is for perfect results, BTW. I can get it to print at faster speeds but with degradation in print quality. This is the limit of me getting excellent or the best quality this machine is capable of producing.