Why on my Pimax 8K can I see the "pixels" on the screen and readability is near lower than on my Vive PRO?


I don’t know why on my recently received 8K i’m still seeing the pixels on the screen, and the readability of the texts i can say is lower than on my Vive PRO.

I tried and compare on maybe the same time (to not lost the feeling) the following games:

  • Elite Dangerous
  • Fallout 4 VR
  • Skyrim VR
  • Steam VR Home

The feelings are the same on each one. When on my Vive PRO is normal see the pixels, I couldn’t expect it feel the image so pixelated it on 8K, as near the size of the pixels are the same that on Vive PRO. Also the texts are horrible. On Vive PRO, for example the Pip Boy I can read all perfectly. On the other side, on 8K is pixelated and the same time that blurred.

I tried with supersampling on all the sizes on the 8K (0.5, 1.0, 1.5, 2.0) and the result is the same, I cannot have better image. Always blurred and pixelated. Also, when I get the controllers below my eye line I can see that the controllers start to double on each eye and I have fear that this can make my squinting.

I cannot understand why on a screen with this pixel density and resolution I can perfectly see the pixels on the screen, and also the image is so shitty.

Can anyone explain if I’m doing something wrong, or if it have the same problem?


Can you post ypur system specs please.

Congrats on receiving your headset. Have updated title & added @EarlyBackers to your post.

Sure. System Specs:

     Operating System: Windows 10 Pro 64-bit (10.0, Build 17134) (17134.rs4_release.180410-1804)
             Language: Spanish (Regional Setting: Spanish)
  System Manufacturer: MSI
         System Model: MS-7926
                 BIOS: V1.10 (type: UEFI)
            Processor: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
               Memory: 32768MB RAM
  Available OS Memory: 32716MB RAM
            Page File: 39203MB used, 20832MB available
          Windows Dir: C:\WINDOWS
      DirectX Version: DirectX 12
  DX Setup Parameters: Not found
     User DPI Setting: 144 DPI (150 percent)
   System DPI Setting: 144 DPI (150 percent) Card name: NVIDIA GeForce GTX 1080 Ti
    Manufacturer: NVIDIA
       Chip type: GeForce GTX 1080 Ti
        DAC type: Integrated RAMDAC
  Display Memory: 27485 MB
Dedicated Memory: 11127 MB
   Shared Memory: 16358 MB
    Current Mode: 3840 x 2160 (32 bit) (60Hz)
   Monitor Model: ASUS PB287Q
      Monitor Id: ACI28A3
     Native Mode: 3840 x 2160(p) (59.997Hz)
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Is it all so bad that SDE 8K is compared to VivePRo?
Could you take the same photo through the lens VivePro and 8K for comparison? :roll_eyes:
It seems to me that 8K should be much better than VivePro in pixelation, and readability should be better.
It’s strange that you compare 8K with VivePro. 5K + is comparable to VivePro by SDE, but not 8K …
The size of the pixels at 8K should be significantly smaller.


Your CPU might be affecting performance of tge 1080ti.

Switch Video resolution to manual to see what base gpu utilization is at.

When I tried it on my i5 6500 16g ddr4 2400mhz ram with my zotac 1080ti mini gpu utilization in steam was at 16% reccommended when set to manual.

After I upgraded to ryzen 7 2700x gpu utilization increased to 36% as I recalled.

Now I also don’t have LHes & controllers so tracking will also be utilizing you cpu heavier than my i5 setup.

I would try a free game(demo) like WarRobots VR without LHes & wands. If you own Gunjack also looks great & doesn’t require LHes. Just gamepad.

There is a Bottleneck calculator that while doesn’t weigh all things but will give an idea if your cpu is maybe restricting gpu performance.

After my upgrade visual quality & performance jumped greatly. If you choose to upgrade. I would strongly reccommend amd as the ryzen 5 2600(x) would be great & you will be able to use the ryzen 3000 series cpus which look awesome!

I believe it’s his cpu hindering his gpu as it was with mine before the upgrade especially with having a full setup the tracking would be heavy on cpu usage.

What’s your firmware version?

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Mine? 181. The one that came with pitool 195.

I was asking dani, but now he has something to compare to.

Have you yourself noticed improvements (image quality wise) with the latest firmware?

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Or maybe a diagonal pixel pattern.
Although if he compares with VivePro, then there is also a diagonal pattern, then it should be familiar to him already. But why a pixel the size of a VivePro turned out is not very clear.

An i7 4790 @4Ghz is certainly NOT bottlenecking a 1080ti, at least not at the high resolutions we use in VR.


181 looks good to me. But keep in mind 2 things upgraded pitool & firmware.

4790k will pull 1080ti well, there shouldn’t be any problems here. That’s for sure. Especially in VR.

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Check steamvr auto res in video. It shouldn’t but a cpu upgrade has shown otherwise.

Bottleneck calculator says the same with 16g ddr3 & cpu at 120%

This was also verified by my buddy who builds hi end pcs saying you should have 6 cores for 4k.

EDiT: now this says it shouldn’t but i would try an upgraded system to test on as @yanfeng found upgrading from the i7 4790 made a huge difference.


I’m curious about the artifacts he mention when the controllers was below eye level, that for sure is not normal.

On a Vive pro or wmr maybe not. But the tools say otherwise. I7-4790 is a 4 core like my i5-6500.

It can make a difference for games that are heavy on CPU but that’s all.

And 4k gaming especially in vr depending on games. Add tracking = more cpu use. Positional tracking increases cpu usage.

Trying a seated game with only 3dof can be a good test.

As his result is not typical with others. It might be that he’s even running too much in the background could also be causing performance issues.

Are you playing on wide FOV ?

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