In addition to everyone’s suggestions, have you tried rotating the part so it is at a 45 on the bed? This will keep the printer from accelerating as much in the Y direction since it is not a straight motion, I used to have to do that for tall prints on my Mk3 sometimes.
Also, if I were printing that part I would flip it over unless there is some reason you can’t. You might also get more rigidity using normal supports for the large surface facing the bed, might print faster too, tree supports for large areas take a while for me usually.
In addition to everyone’s suggestions, have you tried rotating the part so it is at a 45 on the bed? This will keep the printer from accelerating as much in the Y direction since it is not a straight motion, I used to have to do that for tall prints on my Mk3 sometimes.
Also, if I were printing that part I would flip it over unless there is some reason you can’t. You might also get more rigidity using normal supports for the large surface facing the bed, might print faster too, tree supports for large areas take a while for me usually.