Stuttering: am I doing something wrong?

Ive just got into Rpcs3, and spent some time experimenting with it. I got its latest version on this site, tried several configurations, but no matter, the game (I tried it with Dragon's Crown, it is "playable") kept stuttering all along. Any feedback about it will be very appreciated, I will leave bellow the specs of my PC:

- Intel core i5
- 8gb ram
- Ati Radeon RX 580, 4gm memory
- Windows 7 / 64