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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 51%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPZ%3C/text%3E%3C/svg%3E)
I edited the main post because now I have better details, I already updated for Unity 2021 and mrtk 2.8, OpenXR installed but when I build still got that: (it doesn't happen on editor). The pixels on holograms are actually flickering.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 1%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EZW%3C/text%3E%3C/svg%3E)
Hello, Welcome to Microsoft Q&A,
Do you have tried to create a new project for testing? What is the result? Is the HoloLens 2 OS version the same as last time? If the HoloLens 2 OS version has been updated, it is recommended that you migrate your project to Unity 2020/2021 LTS and rebuild. You can refer to Migrate a Unity 2019 project to Unity 2020 + OpenXR - Mixed Reality | Microsoft Learn.
Yeah, everything that was made on 2019 has the same problem, I tried to update for MRTK 2.8 but with no success, probably will need migration.
You can also try using the latest version of Unity 2021LTS and MRTK to create a new project and deploy it to your HoloLens 2 to see if it works as expected.
Sorry for late responses, but after weeks consecutive work, migrating the project for MRTK 2.8 and Unity 2021 LTS, I'm still having the problem, but now, I can show what's happening better.
The problem is holograms actually are flickering.
Do all projects have this issue? You can try the official examples in the MRTK Examples package to see if this issue is also there. Also, what is your HoloLens OS version?
Glad to know your issue is resolved. If possible, please post your solution as an answer for others to reference.
So I discovered what happened.
Many objects had Unlit/Color shader, after I changed to standard MRTK shader resolved my issue, thanks!