I decided to buy my first Pimax Headset after owning a Rift DK1, CV1, Quest, Vive Pro, Index, Odyssey+.
The decision was made for Artisan, since there are some good reviews out and I found it a good starting point with Pimax (MRTV, Ludix).
I could solve every issue I was prepared for (edge distortion is not existent after modding the facial interface, IPD is fine, no eye strain). However, I could not solve one issue, which made it unusable to me.
There is significant jitter or judder. The position of the headset seems to jump around like 5 to 10 times per second in all directions for about 2 to 10 pixels! Dependent on the position in the room and the direction I look at, it is between subtle and significant. It is enough to make me motion sick in 5 minutes by only staring in one direction.
In addition to the judder, there is a shift or wobble effect at specific angles when turning in a circle. At certain positions or angles (I think 2 in a full circle) the movement accelerates and slows down although the head movement is linear. It only affects a small turn angle.
It also feels like the head is turning in an oval at the same time. I mean like I would stretch my head forward and back in sync with the acceleration and deceleration. Then the turning is in sync with movement again until the next position is reached. I think it is 180 degree from each other.
I excluded that tracking issues are related to shiny surfaces, windows etc. (removed or covered everything, repositioned the Base Stations) or due to PC overload (using 0,5 and 0,75 super sampling in Pitool and quite low super sampling/under sampling in SteamVR).
I also installed a “clean” version of Win10 and Steam. No difference!
I found the judder very prominent in PiTool version 258, 260, 261, 262, 263, 264 but less prominent in version 253 and 255.
At that point I purchased an 8k+ at a German dealer (could send it back) and it showed the very same issues! That means the Artisan is not faulty but there is a general issue here.
I also got a Pimax 5K XR later on and this worked without any issues with my base stations 2.0 and PC.
use HTC Base Stations 2.0, firmware 3003
Newly installed Win10 and Steam/SteamVR, no other software on the system
Tried all USB Ports available (intel 2.0, 3.0, ASMedia 3.1)
Removed shiny surfaces, pictures etc. from the room
Repositioned base stations
Used very low render resolution to exclude performance issues (pitool quality 0.5)
Used Steam beta and stable version
problem found mainly with pitool v258 and newer (up till current 264 beta)
less pronounced with 253 and 255
Artisan and 8k+ show the issues, 5k XR does not!
Other user report similar issues and it seems like there is a problem specifically with newer Pimax Headsets (blue housing) and Base Stations 2.0 of a certain hardware or firmware version. 8KX also seems to be affected according to some posts (did not have one yet to test).
From what I know, there is some “watchdog dongle” in every tracked lighthouse device and this has its own firmware (independent from the Pimax Headset Firmware). This firmware/hardware part is responsible for tracking data analysis. Maybe the affected Headsets have the wrong firmware or are not properly calibrated. Maybe the blue coating dims the sensors? I am stuck at this point.
Can anyone share his results/experiences? Please only post when owning a headset with blue housing (Artisan/8k+/8kx and lighthouse 2.0 base stations).