Is there still no way to rebake the gi?

I have looked through literally every thread discussing this topic, and every answer is "its not possible" or "use segi" (which is deprecated).

So, for my specific problem. I'm making a game where the player traverses through a procedurally generated maze. So when the player gets near a wall, the maze generates more so you could walk infinitely. So after I did all of that, I wanted to make the game look decent, so I added lights to the roof of the maze and it looked even worse than before, because there was no global illumination. And since the maze is instantiated at runtime, I couldn't bake the lighting.

Is there any way in hdrp to rebake the lighting? And before you say "use ssgi" I have already tried that and there was loads of lightning bugs and other stuff.

Sidenote, I already know rtx works, but I don't have a card and it would slice the playerbase into 16ths.

 

If you're looking for a decent realtime GI for your procedural generated content, you do not have much options.
Maybe you can get away with sky ambient, ambient occlusion and screen space GI. Otherwise you would need to develop your own kind of realtime GI, some sort of Voxel GI or custom probe system with textures 3D.

Unfortunately, nobody will give you decent system for free, atleast not in Unity.

It found this other project bringing voxel GI to the SRP, so maybe it can cover your needs or you can use it as a foundation to develop it further:
https://github.com/Looooong/Unity-SRP-VXGI

But maybe it is crucial to invest into another engine, which already give a realtime GI to start with. Let's face it, developing an own solution will be expensive. If you have a modular maze system, I could imagine it would work rather well with a low texel resolution. Usually, maze walls have rather thick walls, so in theory you should have not so much problem with light leaking. Looking at the screenshot of the SRP VXGI, I could work for your maze system.