Is my CPU just throttling or is a Prochot reset causing lag spikes ?

[lalalala44]

I wanted to get a little more power out of my laptop so I set the prochot offset to 15 in ThrottleStop (It is 25 by default/manufacturer). Doing that resulted in the temperature constantly being at 85 instead of 75 while gaming and of course more fps.
The problem is that after a couple of minutes I get lag spikes for 2-3 seconds and while that happens the temperature drops to about 67 degrees and then it rises again to 85 almost immediately. Then it repeats after a couple of minutes.
Is this even enough time to cool the CPU down to run again if it was throttling ?

Because another thing I noticed is that when I uncheck "prochot offset" in the settings and then go play again,
the temperature stays first at 85, then I get the exact same lag spikes with the exact same temperature drop to about 67 and then it rises to 75 degrees instead of 85.
So basically something resets the prochot offset at that point. (Prochot also gets set to 75 in TrottleStop)

Could it be that the prochot reset happens every couple of minutes causing lag spikes because the temperature is above 75 degrees ? But TrottleStop sets it back to 85 ?

Locking the prochot offset unfortunately didn't work and the lag spikes still happen. And checking only the "prochot offset" option is already enough to prevent the reset.
Unchecking BD prochot also didn't work.

My CPU is Intel i7 6600U with integrated GPU

 

[Ruru]

At least according to Intel, that CPU has a Tjmax of 100C, so that makes sense that it goes up to 85C now as 100-15=85.

I'd put the offset to 0 and undervolt the CPU myself.

 

[lalalala44]

At least according to Intel, that CPU has a Tjmax of 100C, so that makes sense that it goes up to 85C now as 100-15=85.

I'd put the offset to 0 and undervolt the CPU myself.

So it is throttling ?
I'm new to this thing that's why I don't really know when and how it exactly throttles. I just thought that if its stays at 75 all the time anyways I can raise it to 85 since both are way below 100, but then those lags spikes happened.
I would look into undervolting then, though I dont really understand why it throttles like that.

 

[lalalala44]

I just created some log files so somebody can maybe understand better than me whats going on.
It just makes no sense to me that my cpu cools down by beeing at 66 degrees for 5 seconds and then manages to run 85 degrees again for a long time. Thats not how cpus work right ? (If it is I'm fine with that, but I just thought that cpus work differently)
The first log file contains the data where I have "prochot offset" checked all time and in the second log file I unchecked it at the end so you can see the scenario where the offsets resets back to 75 degrees.
(Note that it doesn't reset immediately when I uncheck prochot offset, it resets as soon as the temperature drops down to 67 degrees again)

Hopefully somebody understands whats going on. I appreciate any help.

 

[unclewebb]

@lalalala44
Use ThrottleStop 9.7.2

Check PROCHOT Offset and PROCHOT Offset Lock and press the Apply button.

When the Offset value is properly locked, you should see a yellow lock icon on the left side of the PROCHOT Offset box. It should not be possible for the Offset value to change when it has been locked until after you reboot your computer.

 

[lalalala44]

@lalalala44
Use ThrottleStop 9.7.2

Check PROCHOT Offset and PROCHOT Offset Lock and press the Apply button.

View attachment 382744

When the Offset value is properly locked, you should see a yellow lock icon on the left side of the PROCHOT Offset box. It should not be possible for the Offset value to change when it has been locked until after you reboot your computer.

That did not work but I fixed the problem by raising the PL1 limit by 5 after doing some research on the forum. I didn't think about that before because it didn't even reach the manufacturers limit of 25 in the log files and after raising it to 30 it barely scratches the 25 very shortly sometimes.
I think what happened before was that the Power hit 25 very briefly and caused the system to panic and throttle and reset the prochot limit.
But it's fixed now so thanks for your help