Performance issue a few weeks after overclocking need advice

A few weeks ago I overclocked my gpu and cpu together and a safe amount at that, ever since my pc would start to massively start to slowdown after being on for 10 or so hours and would be practically unusable and I would have to constantly restart it or turn it off etc and sometimes it'll happen even before then, be it whilst playing a game I will suffer freezes when tabbing out for a good 30 seconds then afterwards having a choppy experience with intense stutters for another 20 seconds and I have had enough of all this

A week or so ago I un'overclocked my cpu as that's likely the main cause of this problem and even now I'm still having this issue, I'm going to reset my pc however if this wont fix it can someone please help me out.

(I usually leave my pc on most of the time for over 4+ years of use however I've swapped parts in and out constantly since and this is an entirely different pc and with the age of my newer parts they barely scratch a year old and my pc isn't CONSTANTLY on but most of the time and even with the older parts I had I never came across this issue.)