Hello,
I just wanted to share a possible fix that I believe some have stated in random threads, but took me awhile before figuring out.
If you are getting the Rage Error of Slow System or Insufficient Permissions/Bad Anti-virus - give this a shot.
*This is for users who have GeForce Experience and use the in-game overlay. Disable it. Right click the Nvidia Icon in your task tray --> Choose GeForce Experience --> Click the Settings Cog Icon --> Turn off In-Game Overlay (right in the middle of your screen)
This is the only method that worked for me.
I added GTA/RockStar file path, program, etc. in the Allowed Programs/Exceptions.
Verified Game Integrity
Reinstalled GTA V/Rage/LSPDFR more times than I care to admit
Checked Registry Paths to ensure they were pointing correctly to folder
Run as Admin in every way imaginable
Turned off RTP in Defender/configured open firewall (I'm an ISO, dont worry haha)
Ensured it wasn't Razer program or anything weird
Went through and allowed permissions in individual folders
Obviously up-to-date in all
So yeah.... I did my due diligence and then some haha and all that just for it to be disabling in-game overlay in GeForce Experience. I hate technology.
I haven't had a single issue booting it up (it's been 10-11 times since) and playing for over an hour with good frames and no crashes.
But, wanted to make a thread in case others find it useful or helpful. Thanks - GL!