Overlapping multiple lights will cause artifacts

Hello. The problem is as the title says, when I use multiple lights (actually SpotLight) to illuminate the same area, it produces a mysterious blocky noise like thing.
I'm working on a live stage production and I really need to use a lot of lights, so I'd like to know how to solve this.
The image shows the HDRP sample run with the spotlight added.

 

Currently no. of lights per tile is limited to 24 although it may change to 63 in newest versions: https://github.com/Unity-Technologies/Graphics/pull/5771

Someone with experience in virtual production could help you out with placements of lights in my opinion.

Also, I think with careful adjustment and effectively managing light's affected area and tricks common in real time rendering, you could create most of the scenarios

 

Thank you very much!
I now know the mechanism that causes these problems called light tiles.
In the meantime, I succeeded in removing the noise by disabling Deffered Tile.

It remains to be seen how much this will affect performance...