I “solved” the issue, as in I found the source of the problem and was able to avoid that. The calls to Set Scalar Parameter Value were being done through a simple interface (not unreal engine interface) that was a Blueprint Function Library. i removed the BPFL and did the calls directly and found that they would function correctly outside of editor. There is something implicit happening when redirecting through the BPFL that is not obvious, i’m not sure if it would be considered a bug or rather that I was using BPFL incorrectly, but the current implementation allows for Set Scalar Parameter Value to be called thru BPFL in all builds except the packaged one.