UPDATE as of May 6 2018 @ 2:57pm: I was able to find a fix, I just had to update my GPU Drivers...
Each time I launch GTA V, I get an RGSC error saying 'Unable to initialize Direct X 9 device' and so...enclosed are both my MSInfo and DxDiag text files.
I've reinstalled the game and the pre-requisites. The regedit thing people were talking about, there's no Direct3D in the registry...no issues with Steam Game Cache.
That and I don't want to take my chances of having to wait 24 hours just for Rockstar Games Technical Support to respond...
MSInfo.txt
DxDiag.txt