As you can see from the photo, I am having trouble with the infill (grid). It's a standard set of settings I have used for a long time to speed up large prints. It cant be down to the printer as its doing on another one as well.
Has anyone got any advice.
I have slowed the infill speed down but no joy
RE: Infill troubles
I had the same issue a while back with my ender 3 but I was using the Prusa slicer. After seeing the issue i changed to Cubic infill and that worked. are you using Prusa slicer? if so, I'm thinking that is might be a slicer issue. try using Cubic infill there's like no time difference from what I've seen.