Dang,, hmm I would uninstall everything gta v everything.. delete the gta v folder after uninstall, reinstall it, install LSPDFR then RPH. Open rage run the plugins on start up then go to the other tab I can't remember what its called but it has a drop down menu and start it as windowed mode. Once the game is completed started up press alt+enter to go to full screen. Other than that, this one is out of my league. I apologize.