The PC deteriorated rapidly.
The PC deteriorated rapidly.
You just moved your hard drive and noticed performance drops in games. After returning it, the issue persists. You now have two HDDs and one SSD, but the SSD is sharing the power cable with the HDD.
It seems the drive was moved without disconnecting it and then reinserted. You mentioned no issues arose from that process, even moving it around or leaving it suspended. Did you turn off any components or adjust settings beforehand? Check if there were any optimizations made recently.