I saw this comment on le reddit:
"But the system of [God+Gods Effects] is complex and has parts, as "Gods effects" is complex and has parts and is not identical with God. Proof being that we ourselves and the universe supposedly are his effects, and we are complex and have parts, and hence Gods effects (us) are complex and have parts, and are also not identical with God.
You can't cheat your way to something complex like omniscience while keeping simplicity. Either you know the forms of the other things (directly or indirectly makes no difference, and frankly indirectly is more complex) and thus have parts, or you know the form of only your own simple self, and hence are not omniscient because your simple self does not include all the very existent complex forms.
Your simple self cannot remain simple if it in any way includes the other things that are not simple.
Not to mention that even your own description of "perfect detail" inherently supposes parts, as something with no parts doesn't have details."