Hi,
there is not really much to add to Randolf's answer.
In general, writing a join instead of an FAE is good for less data transfers and less statement executions. Any DB will benefit from this in terms of performance.
So at least consider to change those places where your processes are important for
performance. And don't forget less ressource consumption on DB for an unimportant
process can be good for ohter important processes running at the same time... ;-)
Kind regards,
Hermann