Random drop FPS on every game on laptop. Please help ( lenovo ideapad 510-15ISK)

[hieunguyenhp1998]

My laptop can run game normal before. But for 1, 2 months lately, when i play game it alway random drop fps for few mins or few second. it so annoying. Please help me . Here is my pc specs :
12GB Ram, Nvidia GTX 940MX, intel core i7-6500U, any reply or help from you will be very appreciated ( Sorry for bad english)
i had try many way: update driver for card, i even reinstall my window but nothing work

 

[rgd1101]

What the cpu/gpu temp and usage during the games?

 

[hieunguyenhp1998]

What the cpu/gpu temp and usage during the games?

normal