Any chance of proper full screen? Framerate drops until I alt+tab
Rien
Members Join Date: 2018-01-20 Member: 235276Posts: 20 Advanced user

So, I recently built a new gaming PC along with a gsync monitor. This monitor has a refresh rate overlay option I use to monitor if gsync is working.
Now, for gsync to function in Subnautica I have to enable gsync support for windowed applications, it doesn't work for full screen only. I've taken this to mean that Subnautica DOES NOT do proper full screen.
Is this a problem? Well it shouldn't be, but here is the problem I'm having:
Randomly while I'm playing the framerate will drop from a pretty steady 70-80fps (Ryzen 1700 + gtx1080) to around 20fps. While this happens, I'm watching the GPU usage (using Rivatuner and Afterburner) drop from the usual high 90% down to about 20%. This will continue until I alt+tab out of the game, then switch back. When I do this, the framerate immediately jumps back up to normal.
I'm almost certain this is linked to the fact Subnautica doesn't run in proper full screen but I could be wrong.
If anyone has any input it would be greatly appreciated!
Thanks!
Edit: fixed title
Now, for gsync to function in Subnautica I have to enable gsync support for windowed applications, it doesn't work for full screen only. I've taken this to mean that Subnautica DOES NOT do proper full screen.
Is this a problem? Well it shouldn't be, but here is the problem I'm having:
Randomly while I'm playing the framerate will drop from a pretty steady 70-80fps (Ryzen 1700 + gtx1080) to around 20fps. While this happens, I'm watching the GPU usage (using Rivatuner and Afterburner) drop from the usual high 90% down to about 20%. This will continue until I alt+tab out of the game, then switch back. When I do this, the framerate immediately jumps back up to normal.
I'm almost certain this is linked to the fact Subnautica doesn't run in proper full screen but I could be wrong.
If anyone has any input it would be greatly appreciated!
Thanks!
Edit: fixed title
Comments
This will net you some extra frames by enabling "true" fullscreen support.
Damn, cheers man! Not only did that fix the FPS/GPU usage, I got 10-15 extra FPS and my gameplay is smoother overall!
Why on earth is exclusive fullscreen not the default state?! What a bizarre decision
Thank you for sharing this tip
Given that UWE has said they may do some enhancements post-1.0 (contingent on Subnautica popularity), I think it likely UWE will add this feature back in if there is enough interest.
Ah cool, didn't realise it was a technical issue. Hopefully it will get changed, the weird performance drops don't make a great first impression.
Glad the game's running perfectly for me now though, thanks for your input guys
As a side note, i suspect SN is a bit more CPU heavy then some may assume.
I shall come back to this in the future.
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This actually seems to have killed my fps somehow. Could you please tell me what the command is to undo this?
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