HOW DO I FIX THE RAGE GFX_STATE ERROR

    1. CHANGE YOUR ADVANCED VIDEO SETTINGS

• In RedM, the first thing to try is very simple and all it requires is to change a single setting.  
• To do this just hit ESC > Settings > Graphics. Then change your ADVANCED video settings from Vulkan to Direct x12 -- or vice versa.
• In FiveM, switching from Direct x11 to Direct x10 can actually GREATLY improve performance for low-end PCs. 
• Once done all you have to do is restart your game! 
• If your game is already set to Direct X12 then the issue relies elsewhere -- continue reading below.
   

     2. VERIFY FILE INTEGRITY

• Open where you bought the game from, i.e. Steam, Rockstar, or Epic.
• Right click the game and select Options / Properties.
• Click on verify files and wait for it to complete. 

       3. INITIALIZE YOUR GAME

• Load up the base game and play it for around 10 minutes.  
• The cache copies all of the texture files from the main game. 
• If you haven't loaded the game up your Game Folder won't have those files by default unless you load up the original game first. 

      4. DELETE SGA FILES

• Press the Windows Key + E to open your file explorer and select the Documents Folder
• Go to Rockstar Games -> Red Dead Redemption 2 -> settings
• Delete any file that begins with "sga". DO NOT DELETE ANY OTHER FILE.
• For a more in-depth guide, go here.

      5. UPDATE DRIVERS 

• This is a common issue for NVIDIA users.  
• Sometimes graphics drivers can cause issues on certain games, due to either a bad install or to being unoptimized for the game itself.  
• To roll back your drivers:  Guide
• To do a clean driver install: Driver Updating Software 
• If NONE of these fixes managed to solve your issue, your last hope would be to do a fresh install of both RRD2 and RedM.