Subnautica 2 Early Access Hotfix 3 Adds DLSS 4.5 and Creature Tuning

What changed in Hotfix 3

Hotfix 3 is mainly a stability, graphics, creature-balance, and co-op-state pass. The official note says DLSS-related crashes were fixed, DLSS settings should save correctly, Frame Generation availability was corrected for affected builds, and DLSS was upgraded to version 4.5.

Base builders also get a concrete economy change: Interior Wall costs are now one quarter of their previous price. That is a real base-planning update, but it should not be stretched into a full recipe table until the current build is checked in-game.

Creature tuning to recheck

Hammerheads no longer attack unpiloted Tadpoles, but the note still says Hammerheads can take an interest in Tadpoles. That means older "safe creature" or "vehicle harassment" wording should be rewritten carefully: the important player answer is now vehicle-state behavior, not a simple harmless / hostile label.

Nibblers were adjusted in several directions at once: lower perception range, longer circling before attack, slower overall movement, higher sensitivity to the Multitool, and higher damage. Marrowbreaches now deal more damage but attack less frequently. Those are official balance facts; exact encounter advice still needs current-build testing.

Co-op and state fixes

• Rare crashes when starting games were fixed.
• Clients reverting to a previous position when rejoining multiplayer sessions were fixed.
• Strike Armor modification stacking additively was fixed because it could create a game-breaking state.
• Goggles remaining visible in first-person view after exiting the Tadpole Haul Chassis as a passenger were fixed.

These items should move nearby issue rows from "active watch" toward "fixed in Hotfix 3" only for the exact symptoms named above. Similar save-load, passenger, armor, vehicle, or desync reports still need platform, host/client role, build, and repro notes.

What Sub2Wiki changed

We moved Hotfix 3 to the top of the updates tracker, added this news page, updated the known-issues desk, refreshed performance and DLSS wording, changed creature status language for Hammerhead, Nibblershark, and Marrowbreach, and added the Interior Wall cost change to the base-building watch surfaces.