iCue and Excellence should never be used in the same sentence. iCue is garbage, as bad, if not worse than NZXT's cam. There are bugs in both that have been around for years.
It's a 900mb install, that really should have been broken into selective components and it's a real CPU and disk activity hog. I'm still using CorsairLink 22.214.171.124. It's a 45mb install, uses 0.3 - 0.7% cpu and tells me everything I need to know - my temps across all components, including disk drives (126.96.36.199 took that feature out), and my 14 fan speeds. I use 2xcommander pro on my system.
RGB is useless bling that does nothing for performance, but Corsairlink does have some RGB support if I chose to use it.
After three years iCue is no closer to being stable or useful as it was back then.