Unusual CPU heat when charging on a hybrid laptop

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Hello,
I noticed this problem after kernel update of 4.14.14. Before the update CPU temp
would stay somewhere in 38-48 degrees zone. Since the update however, only
when laptop's battery is charging(and I'm using it at the same time) CPU
temp gets as high as 60-70 degrees and it eventually causes a crash which
forces me to restart.

NOTE: I'm not saying this issue is related to the kernel update I'm just
saying I noticed it after the update only.

My machine: Asus UX301ne laptop
CPU: intel Corei7 6500 skylake 2.5GHz
Graphics: Intel HD graphics + Nvidia GTX 950m

How I tried to solve the problem:
Firstly I noticed that when plugged in and charging, Opening up the
gnome-settings and clicking on "Details" causes a crash that forces me to
restart. I don't know how I can find any info on why that happens.

Secondly I think this is somehow related to my hybrid cards and the
open-source driver of NVIDIA. Also possibly PRIME. I do not know how I can
check this unfortunately. In addition, this question seems to address the
same problem of mine.
https://ask.fedoraproject.org/en/question/111016/laptop-gets-hot-while-charging-really-hot-with-monitor-fans-cant-tell/

However none of the solutions provided at the page helped me.
Also Fans Work fine. They go 5400rpm when I plug the charger in.

I should say that I don't need the NVIDIA graphics at all! Intel would
do... So if there is a way to disable NVIDIA and get rid of this problem It
would be allright. Also if possible I would like to avoid non-free drivers.

Any help and/or clue would be greatly appreciated.
Thank you for your time.
And one word of advice: Don't buy Hybrid Graphic devices...
they're waste of time and money :(
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