Well 250mm/s gives pretty good prints for me at least on PLA and I got this printer specifically for the higher rates of speed so I hope petg can handle these speeds as well. As for the filament moisture, I opened a new roll of filament to see if it will change the print but it was the exact same. One of my friends told me that increasing my height by .05mm was a little too high so maybe I should try increasing it .02 mm higher instead. I’ve used lots of temps and found the current one I use to be best out of all of the tests.