LOD Light Fixes

Overview

This is a minimal invasive mod that aims to eliminate certain strongly illuminating light sources which to some extend are performance heavy on low end CPUs. Many of these enlight certain environment much more than needed. Corvega for instance uses a light with a radius much higher than 2000 which from my point of view is the reason why this area is lagging when walking on the catwalk on top.

Almost all of these are present in exterior environment. Almost exlusively marked "Persistent" and flagged "Never Fades" or "Is Full LOD". The game rarely marks them LOD lights, yet almost all of them are LOD lights. CharlesViewLODLight is one of the very few records properly named in the core game.

From the creation kit wiki:

Is Full LOD: Reference will not fade from a distance. Good to apply to very large objects or lighting where fading out would feel obvious and awkward. Warning: Can impact performance if over-used.

- Vanilla FO4 often times uses the FXLightRegionInvertDayNight emmitance effect which forces lights to change appearance or turn off for a specified, hardcoded time window. Most of these lights should have been using this effect, rarely it was applied.

- This mod adds proper naming, to the EDID signature per record per reference for better orientation and easier maintenance.

Radius peaks at 6000 in some cases. Such as the light in the glowing sea crater. But mostly between 1000 and 2000 which is very much. Compared to other lighting techniques from Bethesda where there are many light sources with far lower radius in use, these high radius lights are heavy. The light around Diamond City peaks at around 4000. One light enlights a whole cell. And one light can shine throughout the whole Commonwealth. Since the game is laggy as hell in Boston City, this mod will probably affect it to the better once done.

Epilogue

There are many more heavy lights in the Persistent section, although not all are part of this mod yet, such as 50+ spotlights.

In the following a complete table of all the lights altered by this mod:

Arc 1 Type  EditorID  Arc 2

3001 defaultLightFire01NS AtomCatsGarageExt01 0

780 defaultLightFire01NSFlicker BostonAirportExt04 768

859 defaultLightFire01NSFlicker BostonAirportExt05 768

1088 SubwayFluorOmni01NS BostonAirportExt11 0

1243 SubwayFluorOmni01NS BostonAirportExt11 0

1309 MuseumBounceWarm04NS BunkerHillExt 0

1309 MuseumBounceWarm04NS BunkerHillExt 0

1234 defaultLightWarm01