also how to stop stuttering in game it plays okay to start with then stutters in random places or fps drop
While the graphic card plays a role in the performance of Duckstation, it is generally compatible with a range of graphics cards, including integrated ones. If you encounter issues, such as the inability to run PS1 games check guide here, troubleshooting steps like moving the emulator and game to another storage device or adjusting the emulation settings can help identify and resolve the problem."Graphic card has nothing to do with Duckstation can run ps1 games even on integrated potato graphic cards.
If the issue was fixed by you moving Duckstation and or the game to another storage then most likely the previous storage is faulty.
Another way to fix it would be to enable preload the game image to RAM under emulation settings I think, but still the original storage must be faulty if it can't run ps1 games.