Currently you don't.
The real underlying issue for this all is that the "Hot" sorting algorithm Lemmy (and Kbin) uses is terrible - if someone posts the same thing in 5 different big & popular (i.e "hot") communities at the same time, there's a good chance you'll see all those five posts all next to each other on your feed even if one has 100 votes and the others have 30 - note how they are all "6 hours ago".