The GTX 1660 Ti averages ~20 FPS in Sisters Royale: Five Sisters Under Fire at 4K High settings — below the 30 FPS minimum playability threshold. Dropping to 1080p Medium settings is the recommended workaround. A GPU upgrade to the next performance tier will resolve this.
Other resolutions — GTX 1660 Ti
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About Sisters Royale: Five Sisters Under Fire
Sparks flare around the man all five sisters wish to claim. Introducing the new vertical scrolling shooter game! The first new game in 12 years from Alfa System, the team that brought you.the Shoot 'Em Up "Castle of Shikigami III" in the "Castle of Shikigami" series. Five uniquely talented sisters are squabbling over which of them will marry the angel Yashin. Enjoy the heroic(?) strategies of al…
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