obsurdly long print time for a rather small print

[curious aardvark]

problem with that sort of calculation is that it isn't going to work.
every printer and filament combination is going to be different.

I have successfully printed at 200 mm/s and 0.4mm layer height with Tiamet3d nano diamond filament.
But nothing else will print as fast.

It also is largely dependant on the print surface you are using.
Printbite - while exceptional - does need the first layer to be printed slowly.
Offset by the fact that the print detaches without hassle and you don't use any scrapers, tape, glue etc.
Small price to pay.

You also need to factor in the physical environment the printer is in.
Not to mention the colour, material and manufacturer of the filament itself.

None of it explains why he's having problems with that file.

[Roberts_Clif]

Maybe if he shares his slicer settings we can get a better understanding.