1) first you want HT left on for all eight threads
2) temp should not go to 93degC in all games just because you enabled HT. In fact it shouldn't change much at all in most games since they don't tend to use much more than 70% or so of the i7-7700K which means HT for most games doesn't matter much so shouldn't change temperature much.
3) thus I'm not sure but temperature in this case sounds like an increase VOLTAGE or FAN profile change. Not sure how that would happen.
4) *Cooler looks pretty good actually so 93degC really shouldn't happen IMO:
https://www.techspot.com/review/1492-hp-omen-desktop/
5) RIGHT NOW all I can suggest is the following:
a) play around with overclock in the BIOS and also,
b) play around with the CPU fan...