I just want to say I also tried Overture PETG (white) and it has been verrry finnicky. I first used it on a Elegoo Neptune 4 Pro and now on the A1, and I think I have good adhesion and flow rate for the first layer at around 30mm/s. Bed at 75C, extruder at 255C, but then the following layers the acceleration, travel speed, and especially cases where there is a quick z-hop/retraction and a tiny extrusion that needs to take place (e.g. a ‘dot’ or tiny quick segment before retracting and hopping again), the PETG seems to be clinging to the nozzle and then successively becoming worse on the first few layers. I get the gist that this brand of PETG has some particular quirks compared to other PETG chemistry so I’m curious about trying other brands and seeing if they can hold up. I’m also going to experiment with simply slowing everything down like another user mentioned in a similar but different thread.