I've read in several places that using back off speeds and clean nozzles can help. I'm running with a new nozzle. Travel speed 150, retraction speed of 20, print speed 50. I think some of these are just defaults with cura 5.4 but I get the same thing with a higher retraction speed. What else should I look at?
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Maybe try to reduce nozzle temperature?
Interesting, I'm printing at 245
That's a bit hot... All PETG I've come across so far printed OK at 230.