Performance fixes

[The Blind Bandit]

So I'm running this on an RTX 2060 with an i7 5820k and 16gb of ram. The game stutters like crazy and the framerate goes from 40 to 70 to 100 in the span of a few seconds. I don't really get what the issue is. I've had it for a while, thought it might be fixed by now. Is there a good solution to this?

[BurningTofu]

For now, let your Nvidia Geforce Experience optimize the Subnautica graphical setting. That's the best thing I can find.

[Cougarific]

Are you running on an SSD? The stutters are the game loading terrain from your drive - SSD minimizes the stutter.

[Lolo]

RTX 2060 AMP
i5 9600K
16GB DDR4
SSD CrucialMX 500GB

The longer I play this ame the more frame drops I have. Lowering graphic options helps only partially, I still have FPS drops. It's driving me crazy. I tried with premissions on Subnautica folders, I tried disabling AVG. Game still stutters.

GF Experience does not find any optimization options for Subnautica.

[Just Aaron]

I`ve had stuttering problems as well. I`m using a RTX 2080 and an i7-8700. It doesn`t happen all the time so I just ignore it when it does. What screen resolution are you playing the game on? For some reason my PC hates 1440 and refuses to play games at 60 fps. I switched it to 2160 and now its a rock solid 60 fps. Maybe give that a try. Even if your PC can`t handle it maybe it`ll fix the frame rate when you switch it back. Might be worth a shot.

[Cougarific]

Are you building big bases or many smaller bases? That's gonna cause frame issues eventually.

Also try to keep in mind this is a $25 (maximum) game. Many people got it for less or even free from Epic Games. Set your FPS expectations appropriately when you consider it's all one big (beautiful) world with no loading screens.

[Boomslang]

Best solution I found to fix this is clearing the game's cache. It will clear any loose items/dead animals etc that have been dropped in the game world

Keep in mind it will also reset items you have picked up and welded doors you have opened, though I find it's a minor inconvenience

Go to Steam/steamapps/common/Subnautica/SNApData/SavedGames and then most likely slot0000 if you have only one game going. In slotxxxx you want to empty out CellsCache

Make sure you don't have any floating lockers floating in the water, they will disappear. Your base and anything in it will be fine, as will your vehicles.

[unsarebel]

hi i had a similar problem before and after a long search i found 2 main causes
- first 1 is when moving from Biome to Biome ( need SSD for faster Region loading )
- the second one is Affinity ( This one worked for me ) , Press Ctr Alt Del then task Manager after running the game, then right click on Subnautica then go to Detail, on Details Page right click again and set affinity ( you will find cpu 0 to cpu 7 ) just unmark the cpu 0.
i run the game on I7 7700 HQ , 1060 6 GB, 16 Gb ram
i used to get 30- max 50 fps , now i get 50-60 and much less spikes
its not your hardware it is the game

[W4rrioR]

It's definitely a problem with the game. I have experienced it myself. The more I played the more the average FPS decreased. But not only that: I started having huge, sudden frame drops, often when looking in certain direction anywhere on the map. Like usually running stable 100 FPS but frequent drops to 10-20 FPS. It gradually became unplayable as I played it.

But the devs acknowledged this in the /r/Subnautica subreddit. Here is a post from a Subnautica dev:

Hey there. We've been working heavily on upgrading the game to use the new Unity 2018 engine, from the much older 5.6 engine we currently use. This should bring some potential gains, and the ability to roll-in some performance improvements.
Unfortunately, upgrading an engine to an already existing game the size of Subnautica takes a lot of work. It breaks a lot of stuff like gameplay code, shaders, rendering issues....the list is pretty massive. So we have to fix all that. While we're doing this, Panic Button (who recently did the Doom Switch port & are working on our Xbox & PS4 ports) are optimizing the game at a very deep level. A large amount of the optimizations are not console-only and will transfer over to PC/Mac as well.

Hopefully this explains why there have been no major updates to Steam. It's not through lack of work. It's to bring you guys the performance you deserve (especially on lower-end machines).

[Just Aaron]

Originally posted by unsarebel:

its not your hardware it is the game

I think this sums it up nicely. That`s the same conclusion I`ve reached. Using an RTX2080 I set the screen resolution to 1080p 60 fps. Still get massive frame drops and stutter. Can`t be a hardware issue.

[TheTool]

Originally posted by Just Aaron:

Originally posted by unsarebel:

its not your hardware it is the game

I think this sums it up nicely. That`s the same conclusion I`ve reached. Using an RTX2080 I set the screen resolution to 1080p 60 fps. Still get massive frame drops and stutter. Can`t be a hardware issue.

[Cougarific]

Originally posted by Just Aaron:

Can`t be a hardware issue.

Could it be a "I paid $25 for this game and shouldn't expect triple-A performance" issue?

[Just Aaron]

Originally posted by Cougarific:

Originally posted by Just Aaron:

Can`t be a hardware issue.

Could it be a "I paid $25 for this game and shouldn't expect triple-A performance" issue?

Can`t be a hardware issue.

[BurningTofu]

Originally posted by Cougarific:

Originally posted by Just Aaron:

Can`t be a hardware issue.

Could it be a "I paid $25 for this game and shouldn't expect triple-A performance" issue?

Triple A is a marketing hype. If you believe in it then you got fooled.

[Coops]

Originally posted by The Blind Bandit:

So I'm running this on an RTX 2060 with an i7 5820k and 16gb of ram. The game stutters like crazy and the framerate goes from 40 to 70 to 100 in the span of a few seconds. I don't really get what the issue is. I've had it for a while, thought it might be fixed by now. Is there a good solution to this?

I am running on two different computers 1920x1200
i5 2500k with 8 GB ram Radeon HD 7950 and a 1 TB SSD
i5 6600k with 16 GB RAM Radeon R9 390 and a 500 GB M.2 MVMe drive.
Both run flawlessly. The only time I have stutters is when I alt tab out on the older machine for a long time then come back in and unpause. When I say stutter I mean a slide show. After running it for a while the stutter goes away.