do the following
1. Load GTA 5 first. Then, once in-game, tab out and launch RPH.
2. Go into the CommandLine.txt file in your main GTA directory and delete everything inside the file and then add `-windowed` and save and exit the document. Then retry step 1.
3. Add the GTA V folder your antivirus's exclusions list. Then restart your computer.
4. Disable any in-game overlay such as Discord, Steam, OverWolf, or Nvidia GeForce Experience.
5. **If you tried everything above and it still doesn't work**: Follow the instructions on page 4 <https://bit.ly/3FLBASB>.