Question CPU Overheating

Mar 4, 2019
6
0
10
CPU: i7 5820K 3.3 GHz
Cooler: Corsair Hydro Series H55 120mm
Motherboard: MSI X99a Raider
PSU: Corsair 750 Watts CX750
Chassis: Corsair Obsidian Series 750D

My CPU has been overheating hugely while playing games lately. It's usually around 40c-50c when idling, but during games it shoots up to high 80's. I've taken my PC apart, cleaned everything, reapplied thermal paste, nothing seems to work.
 
Mar 4, 2019
6
0
10
About a pea sized amount. I've checked my cooler, both tubes seem to have liquid passing through them, they're both vibrating, however one tube is much cooler than the other. Is that normal?