Hi all, really struggling to find an answer to my problem. I am currently printing with a pet g filament from Filaprint uk. I have an issue with distortion about 3/4’s of the way into the 33hr print. Geometry is being thrown out by 1-2mm on the x/y axis, I am also seeing pronounced horizontal banding all over the model. I have had to run the nozzle temp slightly higher than the stated spec because of serious stringing issues.

Machine is a Prusa i3 mk3

Nozzle temp 240

Bed temp 90

Perimeter speed 45mm/s

Infill 200mm/s

Fan 30-50%

Model is 3mm thick with a 20% infill.