The Print Time left value improves in accuracy but is pointless in precision.
Approx. Total Print Time: 3 hours
Print Time: 02:08:51
Print Time Left: 1 hour
It's said "1 hour" for half hour and based on the precision of the output that's about mathematically correct.
Can it not be more precise like saying, "1:12 remaining" or "0:47 remaining"?
You might try one of the plugins which offer more accuracy on the print time guesstimate.
Precision increases the closer it gets to the finish line. Why the artificial fuzzyness? Because a lot of people don't understand that an estimate is an estimate and tried to nail me down on minute differences. You can disable the fuzzyness however, just uncheck this:
I will note that after you've printed the file once, the accuracy for the next time is pretty good.
