MRQ is super slow sometime

hi. i render images with some PCs.

except only one pc with ryzen 5900X, every PCs has 6th~11th i7 CPU with RTX 2070~3080, 32~64gb ram. also ryzen PC have 64GB ram and RTX 3070ti.

in ryzen PC, MRQ Render speed is super slow sometimes and PC is freeze when MRQ rendering. not every time.

i’ve done GPU driver update and TDR Setting, BIOS update too but still have issue. only one thing diffrence in this PC is use RYZEN. is anyone known this issue?