Illuminate moving objects in a lightmap

Godot 4.1.1

I have an illuminated stage with a lightmap, so far everything is correct, the problem comes with the “things” that move on it, enemies for example
How do I illuminate them?
Unshaded option looks very bad and glow eliminates all the details of the texture.

I can’t put a single dynamic light, I’m developing for oculus quest 2 and only one light causes a framedrop from 72fps to 20fps