How can I add many light nodes to a scene in a very dark environment?

Help
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1

Godot Version

4.3

Question

When I try to add light nodes to the scene, I found if there are over 16 light nodes in the scene, the lights doesn’t work as expected. I also tried to use Sprite2D’s additive blending mode to achieve this, but these nodes don’t work well in a really dark environment. So, is there a proper solution to this question? I don’t need Light2D’s shadow functionality.