Short time freezing when I add new operator and black out issues (TD version 32660)

Hi,

(RTX 3090, intel 12700k, 64g ram)

I am using 16410 and 32660

mostly I worked on 16410, and currently, work on some projects with 32660

when I work on the 32660,

start from the bottom, GPU usage under 20%

when I add some node pc stop around 1~2 sec, and sometimes It goes blackout often around once within 2~3 days (PC power’s on / but other things not working)

Does anyone experience this issue? or is the problem with the PC and hardware?
Idk where to start to fix this issues
so I would like to get some advice this kinds of issues