SSD or HDD could actually be slowing down because they’re beginning to fail…
Especially if it’s more than 3 to 5 years old, I would just clone it to an SSD and then work on the bottle neck from there. Or at least back it up if you don’t have it backed up 😉
I used over 12 terabytes this month… but that’s only because I had to restore files from an online backup 😅
Thankfully my ISP could care less.