Tried speeding up PETG printing. Gyroid 5%, 300 mm/s initial (2k acceleration), walls at 350 with 6,25k acceleration, infill at 500 with 13k acceleration. Flow at 0.97, Pressure Advance at 0,05, Retraction is 0,7 mm at 60mm/s speed, but I believe it still wasn't enough - some minor stringing can still be seen. Important thing to change in your profile is max volumetric speed - by default it's too low, sitting at mere 9 mm3/s. Cooling should also be adjusted - going from min layer time of 12 to 8 results in a time gain of 6 minutes without quality loss. Will keep tinkering with these numbers to see how far they cam be pushed.