Describe the bug
Lamps csting a lot of server resources and thus inducing lag.

To Reproduce
Steps to reproduce the behavior:
1: Place a bunch of lamps
2: Run a prfiler

Expected behavior
Lamps not appearing in the profiler

Screenshots

Those two together use more resurces than almost all our citizen entities together which have very complex AIs and pathfinders.

https://cdn.discordapp.com/attachments/495698685334650903/735248446885199892/unknown.png
https://cdn.discordapp.com/attachments/495698685334650903/735246027082301581/unknown.png

Full profile log: https://spark.lucko.me/#L1JI43LE2B

Versions (please complete the following information):

• Minecraft: 1.15.2
• Mod: Newest

Additional context
Add any other context about the problem here.

Fixed partially in 4.5.0a, but it can be a won't fix. There are limitations of Lighting engine.