I have the same rounding issue after importing 1099 from Robinhood (10 transactions for example). Summary is below:
RH - 1,367.09 1,143.93 223.16
TT - 1,365.0 1,145.00 220.00
So numbers are clearly off by 3 dollars meaning I'm underreporting $3 worth of gains and i don't think this will fly with IRS since they are looking at summaries. I have no wash sales. I never saw this before. Looks like a bug and TurboTax needs to look into this.
