Subnautica speedrun of the Glitchless Hardcore category in 1:03:37.
This run uses some new routing to reach a time I used to think was almost unattainable.
I made a video about this grind:    • The Road to 1:03 | Subnautica Speedru...  

Check out this video if you have questions about the run:    • 10 Common Questions About Glitchless ...  

For anyone familiar with the old route, this one takes the mountain portal to the sparse reef area instead of swimming all the way there. A commenter actually mentioned this route a while back, but I wasn't able to make it as fast as the standard route until now.

Because the inventory is full after the sparse section, I can't pick up the 8 scrap metal I usually would get on the way back to the lifepod. I make up the missing metal during the shallows section, which usually means any time saved from taking the portal is lost from the extra time spent in the shallows. Still I think it's worth it because this route is more interesting to run and probably more interesting to watch too.

If you're interested in speedrunning this game, check out the Subnautica Speedruns discord linked from https://www.speedrun.com/subnautica