Eventually, I moved fans 1-5 to others. my fans 2&3 I put on my H100i RGB connection (no issues with it) and then the fans 4&5 I moved to 2&3 on my rgb hub or what ever it is called. has no issues with it since. I have a feeling the issue is down to the node or what ever it is called. I have tried doing the firmware delete and revert then updated that to the most recent firmware from icue. my icue is also on the latest firmware version too.