I have an i5-8600k being cooled by a NZXT Kraken x42. I have overclocked to 4.8ghz. My temps at idle fluctuate between 40 and 50 degrees. Also put Arctic 5 thermal paste on, as this was recommended versus the stock paste. Are these temps okay? Is it because of the AiO they sit high? or because the thermal paste is said to have a 200hr break in period?