Question Is there a maximum number of light you can create in a Project?

So far my project has 3 scenes. Each scene has lights:

Scene 1: 5 lights total - 3 Baked, 2 Mixed
Scene 2: 55 lights total - 25 Baked, 10 Mixed, 20 Realtime
Scene 3: 10 light total - 10 Baked

I'm currently working on scene 3 (scene 1 and 2 are unloaded). Problem is, when I try to add another (Baked) light, an existing one disappears (it doesn't actually disappear, it simply stops emitting light).

So have I reached some kind of limit? It's not a scene limit since scene 2 has waaay more lights than this scene...

 

So - im no light expert, but i have encountered some similiar issues - and what i discovered through questions and answers , forums etc, is that there actually is indeed a max amount of lights that can affect areas at a time. There is a bunch of lighting debug utilities, and tools that can help you visualize this, unfortunately, as i said, im no lighting expert, and i dont even remember the tools names etc atm.

But in short, yes, there is limits, not so much to how many lights you can have, but more so , to how many affect any one given area at a time. (You can see these grids / nodes easily with the debug tools on). Perhaps look into that as a start. GL

 

Hi, will this still happen if opening one scene only? (not load & unload)

Yes, there're real-time lights limitations. (mixed lights are considered as real-time & baked lights)

Built-in RP:

• Forward: default is 4 additional lights per object, but can increase in project settings -> quality
• Deferred: seems to have no limitation

URP:

• Forward: 0 - 8 additional lights per object.
• Forward+: no limitation per object, but 256 (Desktop), 32 (Mobile), 16 (GL ES 3.0) per camera
• Deferred: seems to have no limitation

HDRP:

• You can set the maximum lights allowed per screen in HDRP settings
• Decrease the light ranges to have more lights in one tile