CSG and lighting

My team and I are building a city game. We chose to use CSG-made cars and would like to put the
ELS (the light thing on emergency vehicles) in it. I heard news from other developers that CSG parts and light parts doesn’t actually work together and produces a huge frame drop when it combines.

Currently we are using the CSG cars and set the lighting to “Future”. We don’t exactly know how the performance goes when our game goes live.

I would like to know if these rumors are true.

You can contact me via Disc. thechief42#7341 or by posting here at the forum.

Thank you for your time.