CPU throttling heavily while gaming

[Happyhungarian12]

So I have a Dell latitude 6540 laptop that throttles really badly during gaming, and only unthrottles once restarted.

Take Battlefront 2 for example, it'll run fine for 10 minutes then the clock speed will drop slowly, every 2 minutes or so all the way down to 300mhz, and remain there until a restart. I thought it was heat related so I cleaned out the fans, turned off turbo boost, and replaced the thermal paste. Even after all that with temps that barely touched 80c under full load, the decrease to 300mhz still occurs. I feel like I've tried every setting in BIOS and windows and nothing seems to work. I can't afford a new laptop right now, so I really hope I can get this figured out, any help is greatly appreciated.

[Dr_badwolf]

you put your Paste on wrong...
probably a bubble in there.
The way i do it - Take the chip - put it between two things (heavy ish)

Get a credit card (plastic card) ...
One line of Paste on one side of the chip
... now the goal is hard to explain...
youy want to get the thinest layer - that creates the smoothest slide of your credit card.
You want to flatten the paste and flex your card from once side to the other...

You know you did it WRONG... because it doesnt feel "slick"
(again I dont know how to explain it, you have to learn trial and error)

But when you do - You dong get any bubles... you havent scrapped the chip...
 

[Happyhungarian12]

11 minutes ago, Dr_badwolf said:

you put your Paste on wrong...
probably a bubble in there.
The way i do it - Take the chip - put it between two things (heavy ish)

Get a credit card (plastic card) ...
One line of Paste on one side of the chip
... now the goal is hard to explain...
youy want to get the thinest layer - that creates the smoothest slide of your credit card.
You want to flatten the paste and flex your card from once side to the other...

You know you did it WRONG... because it doesnt feel "slick"
(again I dont know how to explain it, you have to learn trial and error)

But when you do - You dong get any bubles... you havent scrapped the chip...
 

I'll try to reapply the paste tommorrow and let you know how it goes, thanks.