Emergency lights are fine up close, but dim significantly from a distance

When I'm driving or standing near the vehicle, the ELS emergency lights are perfectly fine and bright. However, if I take a couple steps away the lights become very dim. I also noticed that when backup units respond I can only see their flashing headlights, while their emergency lights only appear when they get closer. I'm using VisualV and Better Emergency Lights  to brighten lights, additionally I have followed the common advice to changed the day and night default light values to 6000 and 1500 in visualsettings.dat. I have most graphic settings at high and ultra, with PostFX at Ultra. I believe all these steps improved the light brightness when up close but they are still dim at a distance. Is this just how GTA works or is there a solution for this? 

As you can see, the lights are very dim but it still reflects properly off the surroundings, and it is much brighter if I move closer.