I’ve gotten into the show and am interested in what they find, but there is a ton of manufactured drama which is hard to watch.

I am... I first started watching it because it came on after "Yoopers dig many holes on an island" went off.
It appears that viable suspects exist, but like at the time of the events, no real proof.
Like Jack the Ripper.
And how old would Zodiac be now, anyway?
I think time and effort would be better spent hunting the Golden State Killer.

It is interesting, but the computer stuff is off-the-charts dumb.

There was another show on, two 2-hour episodes, on Charles Manson and some other possible victims. It was very similar, a little better, but ended with no conclusions.