Needs https://github.com/OCB7D2D/ElectricityLamps to do anything useful!
In the future I might create a standalone version for original Lights!
This Mod optimizes POI lights to try to get better lighting. It does this by resetting certain light properties, like changing some lights from point to spotlights, re-orienting where the light shines and most importantly adjusting some shadow settings, like shadow near plane and bias. This fixes some instances of light shining through walls where it should not.
Unfortunately this introduces some issues on its own, although I tried to keep them to a minimum. Sometimes the spotlights don't light the ceiling as it should be, but I sometimes had to still use it since it fixed other more obvious issues. It's an ongoing optimization where a lot of tradeoffs have to be taken into account.