This is ASW (Oculus' Asynchronous Space Warp) kicking in. If your game can't maintain 90fps it drops the game to 45fps and then generates the rest itself (using clever software which attempts to track the motion of things that are moving on screen and produce appropriate in-between frames) in order to give you 90fps. So with ASW on (which is the default at startup) you'll only ever see either 45fps or 90fps. To get a true reading you need to turn ASW off by pressing Ctrl + NumPad 1. You can turn it back on again by pressing Ctrl + NumPad 4.
Oculus Rift - Any obvious settings for performance improvements, or do people live with 45fps?
- Thread starter NeilF
- Start date
This is ASW (Oculus' Asynchronous Space Warp) kicking in. If your game can't maintain 90fps it drops the game to 45fps and then generates the rest itself (using clever software which attempts to track the motion of things that are moving on screen and produce appropriate in-between frames) in order to give you 90fps. So with ASW on (which is the default at startup) you'll only ever see either 45fps or 90fps. To get a true reading you need to turn ASW off by pressing Ctrl + NumPad 1. You can turn it back on again by pressing Ctrl + NumPad 4.
Ahh, so the OR is still displaying at 90fps even when my GPU is rendering at 45fps? Mayeb that explains why I find it hard to tell the difference if some interpolation is taking place?
Sorry and as regards turning ASW on off? You're doing that in what app/place? In ED? Are those binds hard coded then?
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Those key presses are being trapped by the Oculus software somehow (nothing to do with ED really). So yeah - you just hold down Ctrl and press Numpad 1 while playing the game and it should turn it off. There's no visual or audio feedback unfortunately but if you're displaying framerate on the screen (Ctrl+F in ED) and press this key combination while you're getting 45fps then you should see that value go back up to something more like 75 or 80.
Ahh... So without ASW the GPU will act more traditionally and the FPS will just jig and drop down with the GPU/software doing the best it can?
Do suggest ASW on or off then given at times I do exceed 100% usage (eg: around stations and busy hasres)?
I think it's a personal choice. The ASW software is incredibly good and has effectively lowered the minimum entry level spec' for VR which can only be a good thing. If you're discussing settings like we are (or are trying to get the best settings for your system) then I think it's really important to turn it off so that any framerates quoted are "true" framerates and not "fake" framerates (there's lots of people with really high SS and graphics quality settings saying they're getting 90fps when the game may well only really be generating around 50).
I used to religiously turn it off (because I can be a bit of purist) but I must confess I usually forget these days. Generally you won't notice it. The only place where I typically become aware that it's on (and then remember to turn it off) is when I'm looking at station menus down on planetary bases. What you might see as you move your head around is a slightly wobbly effect down the vertical edges of menu frames and the like.
In setting my system up I aimed for a "true" framerate of 90fps in most locations but not worrying too much if it _occasionally_ dipped down to 80 at planetary bases and other high demand locations.
Personally I'm fine with a permanent 45fps and ASW enabled. ASW is absolutely magic for me. It's true there are graphical glitches on the menus and so on, but I honestly rarely notice. HMD supersample is really good, although I can't tell the difference once I go above about 1.5. I have had success combining the two settings, so using 2.0 HMD SS and 0.5 in-game SS for an overall 1.0 pixel rate and that looks pretty good to me.
Having said all that, I've switched off HMD SS for now (see other thread on my compositor glitching out).
Having said all that, I've switched off HMD SS for now (see other thread on my compositor glitching out).
Also, someone suggested using an HMD SS below 1.0. I'm almost positive that's a bad idea.
One simple suggestion from someone earlier in the thread that I would echo: Set in-game SS to 1.0, in-game anti-aliasing to off, then slowly turn up HMD quality to 1.25 or 1.5 if your GPU can handle it. The HMD quality setting makes text look much more crisp to me, I notice that sooner than anything in the game world.
One simple suggestion from someone earlier in the thread that I would echo: Set in-game SS to 1.0, in-game anti-aliasing to off, then slowly turn up HMD quality to 1.25 or 1.5 if your GPU can handle it. The HMD quality setting makes text look much more crisp to me, I notice that sooner than anything in the game world.
Fascinating thread, but I have an idiot question . how do you display fps in the Rift? ctrl+f doesn't work for me in the rift.
Oculus debug tool, there is a "HUD" setting, there you pick "performance". Also this for more info :
[video=youtube;2empB-0abjc]https://www.youtube.com/watch?v=2empB-0abjc[/video]
Ctrl+F shows the FPS on the bottom-left of the ED window that's being displayed on your monitor. You can either peer down the nose gap of your Oculus to see it or else go the Debug tool route described in the previous post.
Got it. Then using the peeking throught the nose gap technique, I can see that I get a solid 45 fps, and that's set at VR Ultra in the ED grapics menu (great by the way that they have these nice choices there), but I did back off shadows.
Currently I just enable my rift on my Ultra settings, and hitting >100% GPU usage in busy HazRes and in stations.
Are there any good adjustments to be made to my settings to improve the OR's performance and maintain good visuals?
That said though, when I do exceed 100% GPU usage, my frame rate throttles down to 45fps (instead of 90) and TBH I'm not sure I can even tell the difference?Does anyone else just live with the VR unit dishing out 45fps (instead of 90fps) quite happily?
I can't un-see the graphical anomalies that ASW and 45FPS brings. I really don't like them even though there was a time I couldn't see them. Once you do there is no going back if you are susceptible..... like 1 min 10 seconds
(don't look at the subtitles)
[video=youtube_share;KfaSxIkLslE]https://youtu.be/KfaSxIkLslE[/video]
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