How good is your air flow through the case, it will need to be good as the Vega will be pushing out lot of heat into the case?
You can check by taking of the side panel and see if the temps of your card/CPU comes down.
Your NZXT Kraken X52 AIO cooler, location roof or front?
Any other fans?
I think air flow is pretty good... 2 front mounted fans, one rear, AIO had to be mounted on roof.
Been monitoring temps last night and CPU barely went above 50 , so I don't know what was going on the other night when they hit 70..
Definitely going to plan a new case build in new year. Probably R6 and front mount the AIO.