What devbiker states is hearsay, without solid evidence. I, on the other hand, have 1st hand, personal experience with two of my own PCs (Skylake and Haswell, full specs with pics in my sig) where i have NZXT AER140 RGB fans in use with HUE+, LED strips and NZXT CAM. I also have Corsair ML140 Pro LED fans in both PCs. While ML140 Pro LED doesn't require Corsair iCUE, my
Corsair STRAFE RGB,
Corsair Sabre RGB,
Corsair Void Pro USB,
Corsair MM800 RGB Polaris and
Corsair ST100 RGB do.
While i have had issues with my NZXT CAM and Corsair iCUE, those aren't because i have both programs running in same PC. Those are because the programs itself, at times, can be buggy. Latest bug was when NZXT servers dropped down and i wasn't able to log-in to my NZXT CAM. <- that has nothing to do with i having and using Corsair iCUE. And only issue i've had using Corsair iCUE is with Corsair CEE since latter is 3rd party made and not compatible with iCUE. After some trial and error, i've managed to get CEE running alongside iCUE without issues.
So, saying that NZXT CAM doesn't work with Corsair iCUE is like saying Asus MoBo doesn't work with MSI GPU or Logitech Gaming Software doesn't work with Razer Synapse 3 (when you have Logitech KB and Razer mouse in use).