2.0.7 and 0.8 judders possibly caused by ED now rendering 3 views for VR instead of 2? :(

VR andysonofbob · Mar 24, 2016

I am so sorry for the spams! Last one I promise

I have been gaming in 3D for a decade. Rule of thumb: 3D costs up to one half of the FPS because GPU etc has to render 2 scenes.

I notice my game's FPS has reduced to about a third of what it was especially when I look around. I also notice the third window on my desktop. If this is the normal view, that would mean my system is rendering 3 views instead of 2! Not good

If this is the case hopefully there will be a work around soon!

Again, soz for the spams. :/

VonWulff · Mar 24, 2016

nop, the 3rd rendering is one of the 2 views used to make de 3d effect. you're are displaying 3 views, but only "calculating" 2

dutchy2000 · Mar 25, 2016

Make sure you haven't added the manual display from the sticky at the top, this is no longer needed. I had to drop a couple of settings to be lower than before to maintain my frame rate on a 970, but overal it looks much better, it is much easier to read text in the latest version so overal I am happy even with steam vr.

razalom · Mar 25, 2016

Me personally I just dont know whats going on with it. On the left of my vision the display finishes early and I have a large black edge to the screen that cuts off a 1/3 of my view from the left eye. Each time i start the game it defaults back to 12xx by 768 resolution and I have to reset that each time but it still doesnt fix the left edge view. Its as though the image has shifted a lot to the right so I am at the end of my FOV on the left and get the edge of the screen showing.

Asp Explorer · Mar 25, 2016

VonWulff said:
nop, the 3rd rendering is one of the 2 views used to make de 3d effect. you're are displaying 3 views, but only "calculating" 2

I'm no expert on 3d rendering, but how can that work?

If I have 3 monitors, and a DK2, the DK2 3d display is sent to a monitor in addition to the DK2. Bandwidth is finite.

Soda Popinski · Mar 25, 2016

razalom said:
Me personally I just dont know whats going on with it. On the left of my vision the display finishes early and I have a large black edge to the screen that cuts off a 1/3 of my view from the left eye. Each time i start the game it defaults back to 12xx by 768 resolution and I have to reset that each time but it still doesnt fix the left edge view. Its as though the image has shifted a lot to the right so I am at the end of my FOV on the left and get the edge of the screen showing.

I think you need to run the SteamVR setup. You may also need to reset the Oculus Center Key. Even though it shows it as bound, you still need to rebind it.

dutchy2000 · Mar 25, 2016

The way VR works is renders 2 frames and then those get distorted so when the light goes through the lens it is undistorted. Now the slow part is calculating the frame, to display the extra window all you have to do is send the calculated undistorted (before the distortion happens) frame to the window. So essentially you get the frame that is displayed on your monitor for free.

Me personally I just dont know whats going on with it. On the left of my vision the display finishes early and I have a large black edge to the screen that cuts off a 1/3 of my view from the left eye. Each time i start the game it defaults back to 12xx by 768 resolution and I have to reset that each time but it still doesnt fix the left edge view. Its as though the image has shifted a lot to the right so I am at the end of my FOV on the left and get the edge of the screen showing.

You need to recalibrate the steam vr, when you manually start it, it should give you the option to calibrate, do that properly and the view will be centered. The low resolution is for the WINDOW on your monitor, not on the DK2

Asp Explorer · Mar 25, 2016

Soda Popinski said:
I think you need to run the SteamVR setup. You may also need to reset the Oculus Center Key. Even though it shows it as bound, you still need to rebind it.

You might want to rebind it to something else as well - otherwise you'll end up with heaps of screenshots saved to Steam

RAJA · Mar 25, 2016

As stated by people before, set the monitor refresh rate to match or exceed 75Hz (if possible on your display).

razalom · Mar 25, 2016

OK cheers for that info on Steam VR. Got that fixed but I dont have the 75hz option anymore in the settings and currently its got bad bad juddering so probably going to wait for 1.3 on Monday

RAJA · Mar 25, 2016

If the display is capable, setup a custom resolution and try that. Also reduce the res of the mirror window by changing the in-game res setting.

Jonathan E · Mar 25, 2016

Just been trying it and when I set the mirrored screen to full screen the judders stopped for me. hitting a constant 75 fps in station.

razalom · Mar 25, 2016

Hadron42 said:
Just been trying it and when I set the mirrored screen to full screen the judders stopped for me.

Do you mean by changing the reso in the options menu as if so tried that and judders persist badly. Tried a lower res at full screen that gives me 75hz as an options and again judders badly.

BigDuke6ixx · Mar 25, 2016

Hadron42 said:
Just been trying it and when I set the mirrored screen to full screen the judders stopped for me. hitting a constant 75 fps in station.

How did you set the mirror to full screen?

VR andysonofbob · Mar 25, 2016

Hadron42 said:
Just been trying it and when I set the mirrored screen to full screen the judders stopped for me. hitting a constant 75 fps in station.

Didn't work for me

When docked I am currently hitting ~50 FPS when I used to be able to maintain ~75 FPS on my rig. Full screen, borderless or windowed, this patch + 0.8 + Steam VR (?) even though Steam isn't active) == serious additional overhead issues for my rig compared to 2.0.6 and 0.6

W7, i5 2500k @ 4.3, 970 SC

Jonathan E · Mar 25, 2016

BigDuke6ixx said:
How did you set the mirror to full screen?

ED graphics options menu, near the top.

777Driver · Mar 25, 2016

I spent last reading the Steam VR forums, so many complaints about the mirrored window screwing up performance in various titles. Looks like we'll be able to ditch it come Monday.

VonWulff · Mar 25, 2016

Asp Explorer said:
I'm no expert on 3d rendering, but how can that work?

If I have 3 monitors, and a DK2, the DK2 3d display is sent to a monitor in addition to the DK2. Bandwidth is finite.

When a game "renders" a frame it does it to a buffer, that is whats displayed, one of the frames for 3d is just "pasted" in the third window. hence only two renderings

Frank · Mar 25, 2016

RAJA said:
As stated by people before, set the monitor refresh rate to match or exceed 75Hz (if possible on your display).

If it's not possible, like in my case, you might want to try the same work-around as me. I just switched off my telly after clicking the "play" button on the launcher. All the resolutions and refresh rates came visible to me after I did that.

razalom · Mar 26, 2016

Well I found 1 solution to the juddering and it was to reduce the Model draw distance (or something along those lines). Used to be maxed using 0.5 and old patch but have to put it to about half now to get it smooth (in a space station at least)