Extream heat and core temps while gaming

Sandaru576g

Hello... My acer laptop brand is acer aspire E 15 E5 576G - 816P...
It has intel core i7 8th generation processor with 4 cores (8mb cashe)
1.8Ghz upto 4 Ghz..
8GB ddr3 L memory
Nvidia geforce mx 130 2gb vram
*** I recently installed some games to my laptop and tried to play them while charging ( because battery reducing rapidly while gaming) and it produced extream amount of heat as my core temperatures were nearly 90C. So I turned off my laptop and tried to play them on battery and then the heat was little bit small than previous amd core temperatures were arround 70C. After I found that when i use my laptop while charg

Sandaru576g

*** sorry.. this is the other part of the question****  ...ing the processor overclock automatically and I think my gpu is the same.. so guys if you have solution for this problem. Plz help.. thanks in advance...