Question Good CPU but games running slow

[biffdownhill]

Hi,
I've got an MSI GE60 2OE
CPU: i7-4700mq
GPU: Nvidia GTX 760M
When I first got the laptop, I could run games pretty well, even after turning the quality up a decent amount.
Recently, when trying to play games on the lowest possible quality settings, I'm getting about 15-20 FPS and I can see in the task manager that it's the CPU that's on 100% @ 2.49GHz when my GPU is only at about 40%.
When I run Nvidia geforce experience in game, it says on the counter that I'm getting about 50fps+ but that's just not right at all.
I've updated all my drivers, turned off windows search/superfetch, and I'm running on high performance power mode.
Does anyone have any idea what's going on and could maybe help me out?
Thanks

 

[rgd1101]

Check cpu temp when gaming?

 

[biffdownhill]

Turns out after checking again, it's not an i7-4700mq but an i5-4200m even still though I wouldn't have thought it would struggle this much.
When gaming the CPU stays at around 70°C and when the computer is idle it stays at around 40°C.