Ys 9: Monstrum Nox PC Patch Improves CPU-Bound Performance

The surprise performance patch also adjusts the refresh rate selection algorithm and also signs the executables, preventing false positives.

Posted By | On 26th, May. 2022

Ys IX Monstrum Nox

Despite being out on PC for a good year now, Ys 9: Monstrum Nox has received a sudden performance patch courtesy of PH3 CTO Peter “Durante” Thoman. While working on The Legend of Heroes: Trails from Zero, which releases this September worldwide, Thoman used an optimization which he felt could be useful for Ys 9’s PC performance.

“So I ported it over, and depending on the hardware and in-game scenario, some testers saw improvements of 25% in CPU limited scenarios. As such, it seems worth releasing publicly.” When in the center of Balduq with ultra draw distance enabled, CPU-limited performance was found to be about 28 frames higher than on patch 1.0.0.

Of course, players will need Direct3D feature level 11_1 and the degree to which performance will improve depends on “the specific in-game scene, settings, and your hardware GPU/CPU balance.” The patch also adjusts the refresh rate selection to more reliably choose one that’s closer to what you may want.

The executables have also been signed, which should prevent any false positives with some players’ antivirus software. Check out the full patch notes below. As always, anyone who faces any issues can return to previous versions via the public branches on Steam.

Ys 9: Monstrum Nox is currently available for PS4, PC, Nintendo Switch and Google Stadia.

Ys 9 1.1.3

  • Improved CPU-bound performance. The degree to which you will notice this depends on the specific in-game scene, settings, and your hardware GPU/CPU balance.
  • Adjust the refresh rate selection algorithm to more reliably pick the available refresh-rate closest to the one desired.
  • The game executables are now signed. This should hopefully reduce the antivirus false positives that sometimes pop up for some players.
  • Fixed the English item description of the Holy Sword’s Hilt accessory to correctly reflect its capabilities.

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