Re: OT: Computer is randomly pausing.
Sags and lags are usually due to lack of resources, but can also be bad hard drives or heat problems too. You can record resource use, and you can read temps real time. Hard drives you need to have a sixth sense about. I’d run some stress tests at it and see what shakes out.
PSU's are not dangerous as long as you don't open them or poke around the insides. Your problem does not sound at all like a PSU.
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