Having many torches causes strange lighting using the Deferred Render Preview

When having many torches the lighting becomes squared and does not work correctly. This has happened on both packs I've tried

Pack used in screenshot: https://www.mcbedrock.com/community/shaders-texturepacks/mcpe-bedrock-poggys-pbr-shader-pack-early_beta-no-rtx/#post-33450

 

The expected result would be to not have these strange squares on screen, and to have regular lighting