TeMpEsT StOrM :
No when i played the game the first time after fixing the social club stuff it never crashed ;)
but this duplicated processes at least a think that you need to stay with the both running

When you installed and first run the game did Social Club UI aka subprocess.exe run 4 duplicates of itself at a time, each with a different amount of memory use? Cause I can close these while the game is running, leaving only one which I chose using the least memory without any effect to the games functionality, It also runs 2 gameoverlayui.exe, one won't stop off and restarts itself immediately when I close it, the other stays off when I end the process, but I end both and the game crashes. Something you experienced by any chance? Have you looked at your GTA V associated processes in your task manager for duplicate processes?