How to Stop Subnautica Lag
Try lowering the graphics settings first. Turning down options like texture quality, anti-aliasing, and shadow details can improve performance.
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Clear your cache! Go to the Subnautica save files and delete the 'CompiledOctreesCache' folder. It helped me a lot.
Try playing in windowed mode if full-screen is causing problems. Sometimes a smaller window can resolve lag issues.
Make sure your drivers are updated, especially your GPU drivers. Sometimes they contain optimizations for newer games.
A hot take: Just get a better PC! Subnautica's a demanding game, so your old rig might not be cutting it.
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