Thats a good point. After the cities grow a bit, I check if there can be any optimization only when the city is 2-3 away from growing and 2-3 away of finishing the production task, there you can do some tweaking for better results.
Thats especially important for cities with bad production, where every hammer counts
Having a 18 size city, that needs 23 turns to build Research Lab ain't very funny ...
Thats especially important for cities with bad production, where every hammer counts

Having a 18 size city, that needs 23 turns to build Research Lab ain't very funny ...