Subnautica 2 Early Access has received Hotfix 3, and while this is not a huge content drop packed with new biomes or story chapters, it is still an important update for the health of the game.
This hotfix focuses on some very practical areas: DLSS stability, DLSS 4.5, Frame Generation, crash fixes, creature behaviour, Tadpole improvements, multiplayer reconnect issues, base-building costs and better crash reporting.
That might not sound as dramatic as a new leviathan appearing out of the darkness, but these are exactly the kinds of updates Early Access needs. Subnautica 2 is still being shaped, tuned and stabilised, and Hotfix 3 shows the developers continuing to respond to the rough edges players are finding in the current build.
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What Is Included in Subnautica 2 Hotfix 3?
Subnautica 2 Hotfix 3 is mainly a stability, performance and balance patch. The update addresses several problems that players have been running into during Early Access, particularly around DLSS, creature behaviour and multiplayer.
The main changes include DLSS crash fixes, DLSS settings now saving correctly, Frame Generation availability fixes, DLSS upgraded to version 4.5, Interior Wall costs reduced to one quarter of their previous price, Hammerheads no longer attacking unpiloted Tadpoles, Hammerhead flare behaviour fixed, Marrowbreach damage and attack timing changed, Nibbler behaviour rebalanced, multiplayer rejoin position bug fixed, Strike Armor stacking issue fixed, Tadpole passenger visual bug fixed, Terms of Service callout localised, and crash reports improved with more useful context.
On paper, that is a fairly broad set of changes. In practice, it shows the developers working on the parts of Subnautica 2 that affect the moment-to-moment feel of the game. If you want to see how this compares to earlier updates, check out the Subnautica 2 First Hotfix review and the Subnautica 2 Hotfix 2 patch notes breakdown.
DLSS 4.5 Is the Headline Performance Change
The biggest technical update in Hotfix 3 is the move to DLSS version 4.5.
For players using supported Nvidia hardware, DLSS can be a major help with performance. It allows the game to use AI-powered upscaling to improve frame rates while still aiming to keep the image looking sharp. In a game like Subnautica 2, where atmosphere matters so much, that is important.
Subnautica is not just about survival mechanics. It is about light filtering through alien oceans, shadows moving in the distance, strange creatures circling beneath you, and that horrible little feeling that something much bigger than you is nearby.
If performance stutters or crashes, the atmosphere breaks.
Hotfix 3 fixes issues that could cause DLSS to crash the game. It also fixes problems where DLSS settings were not being saved correctly. Frame Generation has also been fixed so it appears correctly in versions of the game where it was previously unavailable.
This is the kind of technical clean-up that matters in Early Access. It may not be flashy, but it builds confidence. Players need to know the game is becoming more stable with each update.
Interior Walls Are Now Much Cheaper
One of the nicest quality-of-life changes in this hotfix is the reduction in Interior Wall costs. Interior Walls now cost only one quarter of their previous price.
That is a much bigger change than it might first appear. Base building is a huge part of Subnautica’s appeal. Yes, you build because you need storage, power, crafting stations and safety. But you also build because you want your underwater base to feel like your own.
Interior Walls help players organise rooms, divide spaces, create storage areas and make bases feel more like actual habitats rather than plain metal boxes under the sea. When basic building pieces are too expensive, players often stop experimenting. They build only what they absolutely need. By making Interior Walls cheaper, Subnautica 2 gives players more freedom to be creative earlier.
And frankly, that is exactly what base building needs. Let players make research labs, storage corridors, bedrooms, crafting rooms and completely unnecessary dramatic hallways. Half the fun of Subnautica is building something practical and then slowly turning it into an underwater home.
Hammerheads No Longer Attack Empty Tadpoles
Hammerheads have been adjusted again in Hotfix 3, and this is one of the more important creature behaviour changes. The big change is that Hammerheads no longer attack unpiloted Tadpoles.
That is a sensible fix. There is a difference between a creature being dangerous and a creature being irritating. A Hammerhead taking an interest in your Tadpole is fine. But a Hammerhead attacking an empty vehicle while you are away can feel unfair, especially if you return to find damage caused by something you could not reasonably react to.
The good news is that Hammerheads can still take an interest in Tadpoles. They have not been completely switched off or made harmless. They are still part of the ecosystem, still feel like a threat — they just should not be quite as frustrating around parked vehicles.
The hotfix also fixes an issue where Hammerheads were sometimes not attracted to Flares. That matters because tools need to behave reliably. If you know a flare can buy you time, you can plan around it. If it works inconsistently, it stops feeling like a tool and starts feeling like a gamble.
Marrowbreaches Hit Harder but Attack Less Often
Hotfix 3 also changes Marrowbreaches. Their overall damage has been increased, but their attacks have been spaced out so they happen less frequently.
This is a good direction for creature balance. Constant low-damage attacks can become annoying very quickly. They interrupt exploration, scanning, building and resource gathering without necessarily creating real fear. A creature that attacks less often but hits harder feels more meaningful. It creates a better rhythm — you get time to react, reposition and make a decision, but if you ignore the threat, you pay for it.
The ocean should be dangerous, but it should not feel random. This is a core part of what makes Subnautica work at its best, and it is encouraging to see the developers continuing to refine this balance. If you are curious about the broader creature balance debate in Subnautica 2, that piece covers the wider discussion in depth.
Nibblers Have Been Rebalanced
Nibblers have received a more detailed balance pass in Hotfix 3. Their perception range has been reduced, which means players should be less visible to them from a distance. They now circle the player for longer before attacking, move more slowly overall, react more strongly to the Multitool and deal more damage when they do attack.
That sounds like a clear attempt to make Nibblers less irritating but more dangerous when they actually commit. Small hostile creatures can be a nightmare to balance in survival games. If they are too fast, too aggressive or too persistent, they become annoying rather than scary.
By reducing their perception range and movement speed, the developers are making them less oppressive. By increasing the time they circle before attacking, players get more warning. By increasing their damage, the creature still matters. Less constant harassment, more meaningful danger. The increased sensitivity to the Multitool is also interesting because it gives players more direct counterplay — always welcome in a survival game.
Multiplayer Rejoining Has Been Fixed
Subnautica 2’s co-op is one of the biggest differences between this game and the original Subnautica. That makes multiplayer stability incredibly important. Hotfix 3 fixes an issue where clients — meaning players who are not the host — could revert to their previous position when rejoining a multiplayer session.
That kind of bug can seriously damage the flow of a co-op survival game. Position matters in Subnautica. You might be exploring a dangerous area, returning to base, travelling in a Tadpole or regrouping with friends. If rejoining the session puts you somewhere unexpected, it can break immersion and cause real gameplay problems.
If Subnautica 2 is going to make multiplayer one of its major features, players need to trust the system. Co-op should add shared adventure, not shared technical frustration.
Crash Fixes and Better Crash Reports
Hotfix 3 also fixes a rare crash when starting games. Startup crashes are especially frustrating because they stop players before they even get into the world. Fixing them quickly is important for player confidence.
The update also adds more context to crash reports, which should help the developers investigate hard-to-reproduce issues. Some bugs only happen with certain hardware, settings, save files, multiplayer conditions or specific gameplay sequences. Better crash reports give the developers more information, which should help future patches become more targeted and effective.
The hotfix also fixes a Strike Armor modification issue where stacking could happen additively and potentially create a game-breaking state. Subnautica works because the player becomes more capable over time, but never completely untouchable. Fixing that now helps protect the game’s long-term progression.
Tadpole Passenger Visual Fix
Another fix addresses goggles remaining visible in first-person view when exiting the Tadpole Haul Chassis as a passenger. This sounds minor, but first-person visual bugs are always noticeable because they sit directly in the player’s view. Subnautica depends heavily on immersion, so anything that clutters the screen or looks wrong can pull you out of the experience quickly.
What Hotfix 3 Tells Us About Subnautica 2 Early Access
The biggest takeaway from Subnautica 2 Hotfix 3 is that the developers are still working through practical player feedback. This update is focused on stability, performance, creature behaviour, vehicle reliability, co-op issues and base-building quality of life. That is exactly the type of work an Early Access game needs before it starts layering on bigger expansions.
If performance is unstable, players notice. If creatures feel annoying rather than dangerous, players notice. If vehicles behave badly, players notice. If multiplayer sessions break immersion, players notice. If building costs discourage creativity, players notice. Hotfix 3 addresses all of those areas in some way.
It does not solve everything, and nobody should expect it to. Subnautica 2 is still in Early Access. There will be more bugs, more balance changes, more debate and more updates. But this patch is another step in the right direction. If you want context on the journey so far, the Subnautica 2 First Hotfix review and Hotfix 2 breakdown are worth reading alongside this one.
Final Thoughts
Subnautica 2 Early Access Hotfix 3 is a practical and worthwhile update. The upgrade to DLSS 4.5 should help supported PC players with performance and stability. The DLSS crash fixes and Frame Generation fixes are important technical improvements. The creature changes make Hammerheads, Marrowbreaches and Nibblers feel more deliberately balanced.
The Tadpole changes are welcome, especially Hammerheads no longer attacking unpiloted vehicles. The multiplayer reconnect fix is important for co-op reliability. The Interior Wall cost reduction is great for base builders. And the improved crash reporting should help future updates become even more effective.
This is not the biggest Subnautica 2 update we will ever see, but it is the kind of update that helps Early Access move in the right direction.
For more Subnautica 2 coverage, survival game guides and update breakdowns, visit www.ricardosgaming.com and www.ricardosgaming.co.uk. Watch all the latest videos on the RicardoBeyondRTS YouTube channel.
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