Bug Unity HDRP Flickering Shadows

I have some issues with Using HDRP in Unity. This is an indoor scene (probably can guess what it's for) and I'm using real time shadows with built in spot light. I tried playing around with cascade settings to no avail (though the issue does tend to worsen / alleviate based on shadow distance and near planes?). I appreciate if anyone has any ideas.




Video Link

 

Check if you've hit limit of light per tile restriction.
Try to bake lights with mixed mode.

 

I can't do baked lights because it's procedural, but I did increase light limits and it worked. Thanks

 

Can you tell me how to solve the limit?

 

HDRP has a hard coded limit in many areas of code of 64 realtime lights ( mixed counts as realtime too).
You are able to tune the rendering distance per light to keep it in check, and where possible you could bunch lights together using another light source like and area light.

I can't remember exactly where it it but other than the light explorer I'm sure there's a rendering debugger that helps tunes these lights too so it's not overloading in any one area.