I had a project I was working on so i ordered 10 rolls of PETG HF. I ran through it all and was running out so I looked in my fillamet stash and had 2 rolls of PETG basic same color. The print time difference between the HF and the Basic was almost 5 hours longer for the basic per build plate.
PETG basic doesn’t allow for the same flow as PETG HF. that is the point of HF (= high flow) filaments.
Therefore some of the speeds that are set in the speeds tab are reduced so that flow doesn’t exceed max volumetric flow.