cpu-z 1.91 frezing my PC

My system:
gigabyte x570 ultra
amd Ryzen 9 3900x cpu (default speed)
32GB Gskill ddr4 3600(16GB x 2)
windows 10 for wor workstations x64 19041.113 v2004
no issues benching or stress testing (aida,occt,cpu-z,etc

when I open cpu-z 1.91 it opens fine,no issues
I click on validate and input my name and email,then I click on save validation file
my system locks solid (cpu 100% ,but only ~60c) and then reboots
I tried other versions,cleaning cpu-z off my OS as well
Thank you