Q has Biden getting 36% of Whites in GA and 89% of Blacks. On a good night for Biden, I don't see how that's impossible. If anything, he likely hits 90%+ with Blacks, and if Whites are really turning against Trump, Biden getting to 36% is not that out of the realm of possibility. I don't think Biden will actually win by 7, but Q-pac actually seems to be picking up on what's happening in GA compared to the polls that still have Trump +1-3.
36% with Whites is a serious stretch. 28-30% is not however and that'd be enough for a Dem win in GA and is what polling has consistently showed in the state.