This has gotten to be such a pattern there should probably be laws that precincts can’t report until they have all votes counted and then all report at the same time.
Not a bad idea. And you are right, it IS a pattern. And not just where I live. I remember on Election Night 2016 — Philadelphia held off reporting, for quite a long time as I recall. But it was not enough! They misunderestimated the margin of Trump’s victory.