Turning off light still bright for a few seconds

Unity Engine
1

I have a simple scene setup with no ambient light and a point light.

When I turn off the point light, the scene goes dark, except for some small parts of it (looks like bounce light). After a second or so, this light also disappears and the scene goes completely dark.

When I turn back on the light, the scene lights up, and after a second or so, some additional light hits the objects in the scene (again looks like the same bounce light).

What is this? What can I do to fix it? I’m trying to turn a light off and make it completely dark but having this additional light lag behind ruins the effect.

2

You are correct, its the realtime gi.
It takes some time for the background process to update the changes.
Its a limitation of the realtime gi, You can disable it if you like but you loose al real time bounce light.