If you put electric lighting in they do seem to be pretty weak (unless you want to put the mobile spotlights inside your home) I rely on torces until I have a mining helmet and just leave that on
I was reading this when I remembered a post about too many lights(switched) 10+, torches, in 1 place may be the cause of md5, if it's too dark, we'll put in more lights, it's the nature of the beast. Expand the area of illumination, so we need less fixtures/torches around the area/bases as a shot in the dark wastes ammo
Unfortunately the areas of illumination where reduced in comparison to the PC version because it caused a lot of lag build up with only a handful of lights which could result in crashing really quickly in game, in some cases not allowing players to get back into their save. From what I remember the change in spread was modified rather quickly by the team to reduce this. Due to the limitations of console vs PC, this spread likely won't be brought back to PC levels, if it is it would require a fair bit of optimization beforehand.
The lights themselves do not trigger MD5s, they can however cause a build up in lag which may or may not be a contributing factor to crashes players experience. I usually mention it in trouble shooting and when suggesting things that might assist in reducing crashes but only a small number of players have mentioned lights actually being a factor for them. The lights issue is also more commonly reported on PS4.