See the video:
https://www.veed.io/view/d03c24ef-b629-4376-ac77-f4a49abc79ed?source=editor&panel=share
and for specs and versions:

I installed the Photonics version 0.2.10 and only the mods which are required by photonics with the respective versions in MODRINTH. Shader: BSL 10.1.1. Issue ocurrs in both Java version 21 and 25. Issue does NOT ocurr when using the eclipse shader.
The blocks flicker, and stop to flicker if player is near enough, except if the block is a stair. Stairs flicker even when the player is very near.
Also when NOT in full screen the flickering seems to be faster and more extreme. I tested the exact same mods and BSL but deactivated the Photonics mod. The flickering stopped. Thats why it seems to be an issue with Photonics.
See the video:

https://www.veed.io/view/d03c24ef-b629-4376-ac77-f4a49abc79ed?source=editor&panel=share
and for specs and versions:
I installed the Photonics version 0.2.10 and only the mods which are required by photonics with the respective versions in MODRINTH. Shader: BSL 10.1.1. Issue ocurrs in both Java version 21 and 25. Issue does NOT ocurr when using the eclipse shader.
The blocks flicker, and stop to flicker if player is near enough, except if the block is a stair. Stairs flicker even when the player is very near.
Also when NOT in full screen the flickering seems to be faster and more extreme. I tested the exact same mods and BSL but deactivated the Photonics mod. The flickering stopped. Thats why it seems to be an issue with Photonics.