Jailbreak uses ShadowMap lighting, so only the Sun can cast shadows, the lights are 4³ voxels so they’re pretty performant. Also, the rendering team has found ways to better optimize lights such as slowing the rate at which lights update when there’s too many lights in a single area.
I can’t really think of any other way Roblox could optimize these lights except for revising code or switching from dynamic lighting to a LightMap or texture for lights that are far from the player’s view.
I understand. I pointed out to @vrs2210 that it mostly depends on the hardware of your computer. Future lighting was mostly a push for realism on Roblox and not many front page games use it, so unless it was a core mechanic in a game or switching lighting would provide an unfair advantage or disadvantage to others, it’s not really a problem.