Just to clarify, is the IRS site reporting that you are getting back $1674.00? The IRS gives the final amount of your refund after they have accepted and processed your return. Please click this IRS Help link to learn more.
The IRS expects to issue most refunds in less than 21 days after being accepted. Turbotax gives an estimated date based on the IRS's 21 day timeframe. So it all depends on the IRS and how fast your tax return moves along in the system. TurboTax does not receive any updates from the IRS. Therefore, I would not worry about the estimated dates.
Taxpayers who claim the Earned Income Tax Credit (EITC) or the Additional Child Tax Credit (ACTC) may experience a refund hold.
Note: You will need your social security number, filing status, and refund amount in order to track your refund.
If your return is still pending and not accepted yet by the IRS, you will need to wait until it's accepted to check the status on the IRS website. Be sure when checking Where’s My Federal Refund? site that you are entering only your Federal refund amount. This can be found on your Federal form 1040, line 21a. Also if you paid any fees out of your federal refund, use the refund figure prior to the deduction of he fees
So I don't know much about all this stuff, BUT I do know that the IRS hadn't even started to look at anyone's return until January 27,2020. Therefore, the "21 days" wouldn't of started until then to begin with. AND that "within 21 days" statement is only a best case scenario, since there are way more people outside, than inside, of the IRS. So it's going to take a bit.
The IRS issues most refunds in about 21 days, although some returns take more time to review. The IRS usually begins issuing tax refunds on returns with the EIC or Additional Child Tax Credit in late February.
Your refund could hit your account 1-5 days after it is sent by the Internal Revenue Service because banks vary in how and when they credit funds.