A cooler being 'supported by Corsair' is not the same thing as saying the AIO is adequate for all CPUs from 40 watt TDP thru 190 watt TDP...
It's small radiator, so it can only dissipate so much heat so quickly....; if it is marginal on a 7700K, you can bet it's inadequate on something 4 times the core count and with nearly twice the TDP rating....
Does Corsair say it is adequate for a 1950X?