840M core clock dropping and makes fps drop

[SpartansMan]

Hi, so I have a ASUS X550LN laptop with 840M. And a random problem appeared as you can say from the title.

Things I tried :

• 
  Playing around with power options in Windows settings and NVIDIA Control Panel,
  
  Reinstalling my GPU drivers
  
  Running AIDA64 to check if there's no thermal throttle just to be sure, and there wasn't any.

Temperatures are good, about 60-70 on GPU and about 70-75 on CPU. I think the problem might be because it's hitting the power limit but I don't know what to do about it, one guy suggested limit fps but I already get about only 30-40fps on most games and I can't undervolt the GPU either, it's locked. I tried undervolting the CPU (I just thought maybe that would help), and I did about -0.060V and the result is still the same. So do you have any suggestions?



Might that be because of my unoriginal charger?

 

[SpartansMan]

MERGED QUESTION
Question from SpartansMan : "840M core clock dropping and makes fps drop"

Hi, so I have a ASUS X550LN laptop with 840M. And a random problem appeared as you can say from the title.

Things I tried :

Playing around with power options in Windows settings and NVIDIA CP,

Reinstalling my GPU drivers

Running AIDA64 to check if there's no thermal throttle just to be sure, and there wasn't any.

Temperatures are good, about 60-70 on GPU and about 70-75 on CPU. I think the problem might be because it's hitting the power limit but I don't know what to do about it, one guy suggested limit fps but I already get about only 30-40fps on most games and I can't undervolt the GPU either, it's locked. I tried undervolting the CPU (I just thought maybe that would help), and I did about -0.060V and the result is still the same. So do you have any suggestions?



Might that be because of my unoriginal charger?