FPS Drops

The FPS when I start CS GO is like 100 then it the middle of the game it goes to 70 then after that it sticks to 30-50 and keeps like that till I close the game . I am using a laptop , I know it's not so good but I used to play good before and I have not installed any programs and it starts well so wtf is this ?

Stop looking up porn, lower-settings,reformat computer,virus scan, good to go!

Maybe Overheating? Check your temps when you start getting horrible fps. I use Speedfan for it.

Graphics on low is love.

Yeah i was playing wow when i suddently dropped to 7fps in Ultra+ settings when its used to be at 60-100

I had Intel installed instead of Nvidia

You should get a coolingpad, any decent coolingpad will do. Using one will also improve the life length of your laptop.