CPU causing lagging/glitching in games?

I had originally created a thread to ask about the temp of my i3-4160 when I ran Prime95. It reached 76C within just a couple mins and then I terminated Prime95.

Original thread: http://www.tomshardware.com/answers/id-3041147/4160-load-temps.html

I'm now experiencing freezing/glitching/lagging in-game (I don't recall this before running Prime95), but only on certain games. The glitching is not constant, but intermittent and only last a second or two each time.

The games that glitch:
Fallout: NV
League of Legends

Games that do not:
Heroes and Generals
Need For Speed: Most Wanted

It happens in LoL even when I play a single player game with all bots.

I took some screenshots of my CPU usage while in-game after experiencing the glitches 3 times within a minute or two.

Screenshot of Fallout: http://s260.photobucket.com/user/MrN1ce9uy/media/SystemHWMonitor20160425-01.png.html

Screenshot of LoL: http://s260.photobucket.com/user/MrN1ce9uy/media/SystemHWMonitor20160425-04%20LoL.png.html

I don't see any spikes in CPU usage. Nothing else has changed that I can think of (video drivers, etc.) So what could be causing the freezing/glitching?
 
Solution
In one of my laptops, the system was periodically pausing for seconds at a time occasionally. Turned out it was a failing hard drive (SSD). Occasionally, the drive would slow down to a crawl, then resume normal operation, causing the system to hang.

I'd say it sounds most likely an I/O problem (HDD), or software.
In one of my laptops, the system was periodically pausing for seconds at a time occasionally. Turned out it was a failing hard drive (SSD). Occasionally, the drive would slow down to a crawl, then resume normal operation, causing the system to hang.

I'd say it sounds most likely an I/O problem (HDD), or software.
 
Solution


I was thinking that as well. I'm going to transfer the game files to another drive and see if the issue persists. The games currently reside on a refurbished SSD that is my secondary drive. I'm transferring to my primary SSD which I bought new.
 
^ This might still happen if necessary Windows components are on the failing hard drive. I'd suggest cloning your whole system, if you can, and see if it persists. You can find free cloning software online, something like Macrium Reflect?
 
Here's a screenshot of me backing up the refurbished secondary SSD (G) to an external HDD (M) while playing LoL on my primary SSD (C) with no lagging or glitching :)

SystemHWMonitor20160425-07%20LoL.png