Sword of the Sea DLSS Mod: Use Native Support in 1.6

Do You Need a Mod for DLSS?

You can stop hunting for a Sword of the Sea dlss mod just to enable DLSS. Patch 1.6, released October 29, 2026, added native DLSS support, giving you a built-in option for tuning performance. Update the game and try that option before adding a graphics mod.

That update also introduced performance optimizations, additional graphics presets, and broader effects from graphics settings. Those changes matter when choosing settings for fast Hoversword movement across dunes and water: revisit your configuration after updating instead of carrying every launch-era workaround forward.

Several updates changed the settings worth checking:

Update	Relevant changes
October 29, 2026 — Patch 1.6	Added DLSS, performance optimizations, additional graphics presets, and expanded the impact of graphics settings
September 19, 2025	Expanded accessible resolutions and improved handling of multiple monitors
August 29, 2025	Added a 120hz framerate option and fixed an issue preventing access to higher resolutions

Start with the updated game's graphics options. Recheck your resolution, graphics preset, and frame rate setting before deciding whether you need extra tools.

Official page: Sword of the Sea (swordoftheseagame.com)

What Ultra+ Adds to Graphics Settings

Ultra+ is a separate graphics enhancement and performance mod with controls for lighting, reflections, denoising, and post-processing. Its purpose extends beyond enabling an upscaling option.

Image: PlayStation Store

For example, DLSSAutoExposure controls DLSS exposure behavior. Keep that adjustment separate from the game's native DLSS selection when tuning the image.

The mod's controls include:

• LightingQuality: Offers game, performance, standard, high, epic, and insane settings. Start with standard, its recommended default, before increasing lighting detail.
• LightingDownsampleFactorOverride: Changes lighting downsampling and has a substantial effect on performance. Lower downsampling resolves smaller details and reduces flickering.
• ReflectionQuality: Expands the surfaces included in reflections at higher settings, with a potential increase in noise.
• LODBias: Forces higher-resolution textures. Start with minuspoint5, the safest listed adjustment; stronger values can introduce visible patterns.
• ChromaticAberration: Can be disabled to reduce the blur associated with that effect.

Denoiser offers game, none, temporal, and rayreconstruction options for global illumination and reflections. Temporal denoising trades additional temporal information for reduced noise, with ghosting as a possible drawback. Enabling ray reconstruction also turns depth of field off. LightingUpdateSpeed adjusts how quickly global illumination updates, while BetterReflectionSDFs increases mesh resolution in global software Lumen space, particularly affecting reflections.

Keep changes focused. Adjust lighting quality first, inspect the result, then move to reflections or texture detail. Changing those controls together makes it harder to identify which adjustment improved the image or hurt performance.

Ultra+ also includes bloom, film grain, depth-of-field, motion-blur, and vignette controls. Use those to shape presentation after settling on a performance level you can maintain.

Revisit Older Scaling and Stutter Workarounds

The game's August 2025 launch build lacked the DLSS option now included in Patch 1.6. Performance configurations built around that earlier version need another look.

Image: Nintendo

NVIDIA Image Scaling, NVIDIA Smooth Motion, and Lossless Scaling served as alternative ways to upscale the image or generate additional frames. Evaluate those tools separately from native DLSS so you can judge what each change contributes.

Prioritize consistent motion over the displayed FPS number. Lossless Scaling could raise output frame rates while stuttering remained, and Smooth Motion could introduce visible artifacts during lower-frame-rate sections. Inspect water, moving scenery, and the character's silhouette while surfing when comparing configurations.

Revisit resolution workarounds, too. Earlier configurations used an executable DPI override to address resolution problems, but subsequent updates fixed inaccessible resolutions and improved multiple-monitor handling. Try the updated resolution controls before applying that older workaround.

For a useful comparison, repeat the same stretch of gameplay after each adjustment. Pay attention to interruptions during turns and transitions into water, alongside image clarity. Keep the setting changes that improve those moments on your system.