I've never had this problem until 2 days ago. I've spent my whole 2 days searching for fixes and stuff that I could do to fix this problem like changing something in the power management settings, unparking cores, using throttlingstop, and some options in the BIOS like cpu voltage thingy or cpu speed but unfortunately, I don't have all of those options in my BIOS. When at idle, my processor runs at about 1.8 GHz. When I try to play games, it drops at about 400 MHz which is really frustrating cause I can't even play the game! I'm using an ASUS X570UD laptop and my processor is Intel Core i7-8550U @ 1.80GHz.
I would appreciate every help that you might offer and hopefully it would solve my problem.