KiiNGKiiLL

I've noticed a few threads here that are asking for help with this problem, but I don't seem to see any solutions other than to wait. Anyway, I went to play LSPDFR and something updated before I got a chance to see what it was(I believe it had something to do with the gunrunning update). So far, I've seen 1 solution, which would be to revert GTA 5 to what it was before the GR update, but I have absolutely no clue how to do that as I use the STEAM version of the game. I feel like that would make things a hell of a lot faster than just waiting for Scripthookv to update(which is causing most of my issues). Anyone know how to revert the game with the STEAM version, or am I & everyone else who has this problem atm sol?