Question CPU Suddenly Running Hotter

[AcerbicJett]

Greetings.

I tend to obsess over temperatures, don't like to let them get too high. I always have software running in the background to monitor it.
The past week or so, my CPU temps have gotten much much hotter, and for no apparent reason, as far as I can see.

It used to idle around 30° C, and while playing more demanding games it'd get up to about 65° C, with semi-frequent spikes into the low 70's.
Now it's idling at 40° C, with one core (which core it is changes every second) constantly around 60° C. While running the same games, it'll run in the high 70s's, with frequent spikes into the high 80's.
That's hotter than I'm comfortable letting my CPU get.

My processor is the Intel i7-9700k, and I'm using the Cooler Master Hyper 212 Evo Processor cooler.

Spoiler: Irrelevant Aside

(Irrelevant aside, but I've had bad luck with water cooling--after 2 different coolers both shipped with faulty pumps, I said 'forget it' and got a normal cooler)

I have since taken my whole computer completely apart, cleaned the ever-living smack out of it, and replaced the thermal paste, but there were no changes to the temps.
So... any ideas what the issue could be? Only thing I can think of is that my cooler needs replacing.
Edit: Forgot to mention, I have checked and double-checked--all the fans are still running correctly.

Worth bringing up is that there was a few days where I couldn't use the temperature monitoring software--and it seemingly was within those few days that the temps spiked.
My antivirus software started blocking the program, saying it protected me from 'vulnerable kernel drivers'. Adding exceptions doesn't do anything, so now I have to go into the settings, disable 'block vulnerable kernel drivers', launch the program, then re-enable the setting.
Think it's possible that update is messing up the readings somehow, perhaps? Guess there's an easy way to test that...

 

[white.a.drew]

Greetings.

I tend to obsess over temperatures, don't like to let them get too high. I always have software running in the background to monitor it.
The past week or so, my CPU temps have gotten much much hotter, and for no apparent reason, as far as I can see.

It used to idle around 30° C, and while playing more demanding games it'd get up to about 65° C, with semi-frequent spikes into the low 70's.
Now it's idling at 40° C, with one core (which core it is changes every second) constantly around 60° C. While running the same games, it'll run in the high 70s's, with frequent spikes into the high 80's.
That's hotter than I'm comfortable letting my CPU get.

My processor is the Intel i7-9700k, and I'm using the Cooler Master Hyper 212 Evo Processor cooler.

Spoiler: Irrelevant Aside

(Irrelevant aside, but I've had bad luck with water cooling--after 2 different coolers both shipped with faulty pumps, I said 'forget it' and got a normal cooler)

I have since taken my whole computer completely apart, cleaned the ever-living smack out of it, and replaced the thermal paste, but there were no changes to the temps.
So... any ideas what the issue could be? Only thing I can think of is that my cooler needs replacing.
Edit: Forgot to mention, I have checked and double-checked--all the fans are still running correctly.

Worth bringing up is that there was a few days where I couldn't use the temperature monitoring software--and it seemingly was within those few days that the temps spiked.
My antivirus software started blocking the program, saying it protected me from 'vulnerable kernel drivers'. Adding exceptions doesn't do anything, so now I have to go into the settings, disable 'block vulnerable kernel drivers', launch the program, then re-enable the setting.
Think it's possible that update is messing up the readings somehow, perhaps? Guess there's an easy way to test that...

It is possible there was an update, however most common thing people don't take into consideration is break-in time..... Just like with a brand new car, boat or basically anything else in the world.... Everything has a break-in point, a mid life point, and end point.... Sounds like you may have hit the break n point for your system..... Or mid life portion of the system.... Over time things will start to run different and including the gpu start to run hotter over time..... Can also be as simple as no longer have a stable bios and need to update it, and it's settings. It maybe the psu no longer able to supplie a steady current load so it's just pushing as much has it can trying to keep the system running

 

[AcerbicJett]

Fortunately, I've done some testing--it was indeed my antivirus making the readings janky.
Don't know why I didn't try testing that out before posting a question here--the thought didn't occur until I typed it, I suppose.

After uninstalling my antivirus and swapping to a different one, the temperatures have returned to what they were previously.
It did seem a bit odd that my temperatures were perfectly fine, right up until I was no longer able to monitor them, and that's when they'd have an issue.

My antivirus was blocking the drivers for the program (when it never did before), and re-enabling the setting that blocked said drivers after launching my temperature monitoring program seems to have been giving me unreliable readings.

So heads up--If you're using a program to monitor your temps, Avast is prolly making the readings funky for now.