No problems installing KCLT or GSX or Add-on Manager or SODE 1.5.1 into P3D V4, very smooth.
You did a fantastic job on the dynamic lighting support both for KCLT and the service vehicles in GSX, bravo FSDT crew!
Quick sample video:
https://youtu.be/CO65IVDmqeMIf anyone is having performance issues with DL enabled, turn you AA settings down, SSAA has a huge impact on FPS with DL is enabled.
Cheers, Rob.