What are you are basing your expectations on as to what is normal ? With a H100i, you should expect CPU temps to be a little bit (2-3C) hotter and a whole lot louder than the better air coolers.
https://www.youtube.com/watch?v=PYKdKVxbnp8
Noctua NH-D15 Stock @ Idle = 29C
Corsair H100i Stock @ Idle = 31C
Noctua NH-D15 Stock @ Load = 58C @ 33 dbA
Corsair H100i Stock @ Load = 58C @ 68 dbA (11.3 times louder)
Noctua NH-D15 OC @ Idle = 31C
Corsair H100i OC @ Idle = 33C
Noctua NH-D15 OC @ Load = 70C @ 33 dbA
Corsair H100i OC @ Load = 73C @ 68 dbA
With noise limited to 40 dba
Noctua NH-D15 OC @ Load = 70C @ 33 dbA
Corsair H100i OC @ Load = 76C @ 39 dbA