I can sync about 20 days worth of blocks (about ~58,000 blocks) in less than a day, usually a few hours. Turn it on, leave it running overnight while you sleep, wake up to minted coins. Repeat after 20 days or so. Seems to work good for me. Sometimes I'll leave it running for many days though because minting keep coming in.

Remember, if you do the math to divide it out, for every 175,000 mintcoins you own = equivalent of minting 1 Mintcoin per hour, 24 hours a day at 5% rate. Right now the rate is 10% though so it's double. It is like mining, but it's energy efficient minting your investment doesn't break or run out of mining ability. The minting ability keeps going as long as you keep minting.