I've been watching Dekalb County and they have been at 37% for some time. I saw an update they updated at 9:33 and then at 9:53 but the percentage never changed. Here are there numbers from 9:53...
Ossoff 102,258 Perdue 21,314 Warnock 103,110 Loeffler 20,489
The Ossoff/Perdue race has 333,978 expected votes, and the Warnock/Loeffler race has 334,051 expected votes. I think they are waiting to put more votes up until they know how many votes they need. Keep an eye on the final vote numbers for Deklab County.
I just checked it again and the Ossoff/ Perdue race now has an expected 335,297 total and the Warner/Loeffler race is up to 335,364 with the 10:20 drop. This could be nothing and just due to percentages being rounded. If it keeps going up, they are definitely cheating.