CRAZY FRAMES DROP ON PC

I just played the game this morning on my laptop and it was running so smooth normally. But when I tried to play at night a message appeared before the loading finishes and it says that you may experience some irresponsiveness while doing certain actions in game. BUT as soon as I arrived at the main menu it was like 5 fps. keep in mind that it is not a problem with my laptop because as I said just this morning I was playing normally smoothly 100+ fps. Anyone experiencing this issue?