[robconery]

It's fractionally slower, true, because of the serialization hit (string to binary). The real juice comes from the GIN index - and if you apply it to specific columns instead of a complete document, you have a rocket ship on read.

[creshal]

> It's fractionally slower, true, because of the serialization hit (string to binary).

And with JSON columns you have to serialize on accesses, which is a lot slower in the read-mostly tests.