Unified Raytracing Exception Cant allocate gfx buffer bigger than 36gb

Steps to reproduce:

1. Clone the project https://github.com/iM0ve/Spotlight-HDRP/tree/APV
2. Switch to "APV" branch in github
3. Update the local paths in Projects/manifest.json file to either point to your local unity checkout or download the manifest.json attachment and replace in the projects Packages folder.
4. Load Main and Day scenes
5. Bake lighting

Actual results: 

Baking fails and there is an error

Expected results: 

Lighting bakes and there are no errors

Reproducible with versions: 6.3.0a5

Not reproducible with versions: 6.3.0a2

 

Tested on (OS): Silicone Mac

 

I think the bug is fairly recent