So we can have more information about your system, Download, run, and save the results of this utility as a text file:
Then ATTACH the text file using the instructions under the reply window ( Drag and drop here or browse files to attach ).
In theory, 10th gen systems should run cooler (smaller wattage processor). But, seeing spikes into the low (not high) 90s is actually perfectly normal - provided they are spikes. If you are seeing sustained temperatures in the high 80s or low 90s, it would seem that there is an issue (with TIM or heatsink attachment or blower operation, something).
Look, if you are within the return period for your storefront, go exchange the unit and check out another. If that one is the same, then you can think about backing off to an 8th gen.