Two of my grown children and I filed our taxes with turbo tax and had the fees taken out of our tax returns. I had mine deposited to the Turbo Card, my boy's had their's deposited to other prepaid cards. My 23yr old is in receipt of his stimulus on his Bluebird American Express prepaid card today. So, I do not think it matters whether you paid for your tax filing through Turbo Tax out of your return, or not, and whether or not you used a prepaid card, or a bank account. I believe you will get it direct deposited either way. It may simply depend on your specific bank's processing times. Bluebird always has his direct deposits in a day or 2 sooner than any other bank he has ever used.
