Pimax Crystal Super configuration

[NuVen]

From some information on Discord and experimentation, I found that changing the Horizontal IPD offset in the Pimax Play software can make a significant difference.

The suggestion is to view some text, such as the list of flight recordings, with only the left eye and move the HMD slightly to find the maximum clarity. Then close the left eye and check to see if the clarity of the text is okay with your right eye only. When I tried this, the HMD had to be pushed towards my right eye before the image was equal. Eventually, a Horizontal IPD offset of +0.5 needed to be set for both eyes to have both eyes in focus simultaneously.

This greatly improved the coherence of the game play images.

A positive setting seems to move the panels away from the centerline, as my FOV increased and the binocular overlap decreased. If I tried a Horizontal IPD offset of -1.0 for both eyes, looking at aircraft about 2 km away resulted in two distinct images that were not aligned.

 

You might want to check to see if your horizontal IPD setting allows both eyes to be in the focus sweet spot.

 

My computer setup is a 14900K and Asus RTX 5090. The sampling method is set to FSR, super resolution of 1.4, sharpening to 0.9 and 90 FPS.

The brightness is set to 0 and contrast to -1.

I use the OpenXR toolkit which show a 4550 x 4486 resolution at these settings.

In the startup.cfg file these parameters are used:

or_height = 4486

or_width = 4550

msaa = 0 (FXAA)

multisampling = 1

 

And I have found these setting in OpenXR toolkit work well:

Contrast: 60

Brightness: 54

Exposure: 25

Saturation: 54

Vibrance: 35

Highlights: 92

Shadow: 0 (shadows are set to ultra in startup.cfg)

Worldscale: 109 (heh heh)

 

 

[NuVen]

I am liking the new Narrow perspective configuration and the reduction in pixels rendered.

 

It seems that the IPD adjustment affects the position of the lenses, so that when the head is tilted back and the HMD presses in towards the face the lenses do not press upon a boney region.
The horizontal offset was used to adjust so that the focus was correct for each individual eye.
I tried a negative vertical offset, which increases the pixel count and increases the vertical FOV, but this was very uncomfortable to the eyes.
A positive vertical offset decreases the pixel count and decreases the vertical FOV.

 

With these settings:
Quality: 1.04
GPU upscaling: 1.1 FSR
Sharpness: 0.2

+0.5 Hoz offset -> HFOV +/- 55.0 (my IPD will measure at 68 mm)
+1.2 Vert offset -> VFOV +/- 55.0
OpenXR toolkit reports: W x H of 4730 x 5168

72 FPS

Frame times typically near 12.4 ms, occasionally near 11 ms, and rarely above 13.9 ms (72 fps).

I am guessing that the Quality setting of 1.04 allows for super sampling near the edges of the viewport without losing pixel "neighbors" before populating all the pixels of the HMD using the GPU upscaling algorithm.

 

Also, I found that after the brightness is set to -2, when the Contrast is set to +1, the low light scenes darken and light scenes brighten.

Edited November 15 by NuVen

[DBCOOPER011]

Thanks for the info, its very helpful. Also using a Pimax Super/5090 but with a 9800X3D

 

This narrow FOV mode is pretty sweet on the Pimax Super, but I wish they included adjustments for the vertical resolution. I tried using the vertical offset of +1.2 in conjunction with the narrow mode, and it brought my resolution to 5004x5400ish. I wasn't able to lower the vertical resolution any further by moving the vertical offset. Moving it up or down just increased the vertical resolution. I also got a little eye strain from it for some odd reason. The HMD is way too bright and I had to lower the brightness tremendously. 

 

I'm using the narrow mode and cropping the vertical resolution in OpenXR toolkit with Crop2FOV. The resolution I'm using now is 5004x4968 with no upscaling. I'm Running 72hz, Pimax sharpening at 1.0, with the below settings. My average frame time on a Rhineland QMB mission is 10ms and the picture quality/spotting is extremely good. It takes a while to get Pimax HMD's adjusted to your face and setup correctly, but well worth it.  

 

Edited November 16 by DBCOOPER011