Make sure on the Wraith Prism you have the CPU Cooler switch (tiny black switch on side of prism case) set to "Performance" and not "Quiet".
Also I have a 3700X that I am using a CoolerMaster Hyper 212 ECO with a push-pull fan configuration. One of the fan I needed to replace with a High Flow/Volume velocity fan to get my processor to stay under 60c under any loads.
The 3700X TDP rating I believe is much higher than what AMD states at 65 Watts. It acts more like a 105 watt TDP processor in my opinion.
Generally my 3700x fluctuates between 48c and 58c under normal use and around 60-63 under very heavy cpu load but briefly. But that is still way below the processor's Maximum Operating Temperature of 95c. So I just ignore it and just keep an eye on the temps using a Desktop Gadget that uses Temp Core that I adjust using Ryzen Master temperatures.
If I ever see my CPU temps go above 70c I will start troubleshooting to see why it is going higher than normal. I found out that when my temps sometimes reaches above 60c is due to my PC being dirty including the CPU Cooler heat sink and fans. Once i clean it well the temps go below and stays below 60c.
NOTE: The 3700X is engineered to run normally up to 95c. So your temps are very good since it is no where near its maximum operating temperature.
I would start worrying if CPU temps start going above 85c or reaches 95c. Then I would definitely check the CPU cooler for proper operation and the PC air flow is good inside the PC Case.