Suggestion on setting my printer

[Food24 0]

I all,

i'm using a printer WASP delta 2040 equipped with a clay extruder kit. Also, I'm trying to pring food like dough, vegetable cream, etc. I'm using Marlin firmware.

Since i have some doubt about estimated and acutal printing time, i reported below the setting of my

printer that i can read from the display of the printer.

ACC=3000 (should be 50 mm/s)

Vx,y= 20 mm/s

Ve= 5 mm/s (should be the default velocity of E-axis);

Vmax (x,y,z,E)= 250,250,250,60

Amax(x,y,z,E)=20000,20000,20000,9000,3000

Aretract=3000 (should be default acceleration of retraction)

xstep/mm(x,y,z)=+085.33

estep/mm=+0400.0

What you think about this setting ? something is wrong ?

In practice in some conditions i have from cura an estimated time of 4 min while the actual time 3 min. How can i explain this ?

Thanks

Food24