How to optimise 2D lights?

I've set up a pretty simple 2D lighting scene, using the URP 2D lights and some 2D Shadow Casters. I'm having difficulty optimising these lights, so that I can use multiple without slowing down the game. All the lighting performance advice that I could find online pertained to the old lights, or to 3D URP lights, so what sort of tricks can I use to speed up my 2D lights, using the URP 2D renderer?

 

Hey, I'm still interested to know some more optimisation tricks, but here's two that I found;

Use sorting layers, and only have the bare minimum layers rendering lighting.
Avoid using volume lights, these are quite slow.

 

Hi! I'm using 2d lights in my project and I'm working with Unity 2020.3.21f1

I'd like to know if 2d lights with normal map are still slow?

I did a small test with 150 2d lights. And turning "use normal map" on and off didn't result in any significant difference in performance.

 

Test for your lowest-end target device. 150 lights may be perfectly fine on desktop but too much on mobile.