Hey ,
I have packaged for windows 64-bit in both development and shipping from the Unreal FrontEnd and with the same results. Though I am also just manually fixing all of these broken features while I am trying out these different builds. I am down to one last glaring issue:
In the editor I have it set so when the character spawns he cannot rotate. I did this by disabling rotation on the Character Controller. But when I spawn in the packaged game I can rotate like nobodies business.
It really seems that the large majority of issues are coming from the packaged product not being able to find the SavedInformation.sav after creating it.