(this is written for blender 2.93.0)

Cycles rendering:

When opening the file. the grass, car and all interior lights are turned off. This is for optimisation reasons. 

When creating a interior render, make sure to only turn on the lights of the groups that are actually visible. This will reduce noise and improve image quality.

EEVEE BAKING

If you made changes to the house/lighting and you wish to rebake the realtime eevee lighting, here is a small checklist on how to do it:

1. Disable the complete ''not bake'' collection from renders (by clicking the camera icon).

3. make sure the sun lamp is turned on for day renders and off for night renders.

4. Make sure that ''lights'' is on for day renders, and ''additional lights'' is on for night renders

4. if you want a faster bake, you can lower the shadow resolution cube size to 64px, and the cascade size to a minimum of 512px (lower will cause lightleaks). Less lightbounces help too

5. Click ''bake indirect lighting'', this can take several hours depending on your system.

6. Make sure to save the file after the bake is done, otherwise the rendered data is gone.

7. You can now turn on the HDRI and ''non bake'' collection.