I may have answered my own question in checking the FAQs on the main site. It says you need a very powerful GPU. Not sure In have that. My PC config is currently:
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Thinking about getting Subnautica but a bit worried about about the lag. I have a recent, fairly high spec (memory, CPU) PC but with an average graphics card. Can I ask what you're running it on and how laggy it can be? Thanks.