CPU clocks down on low-FPS games

[boeing186]

So my fairly new laptop is having issues running some games - specifically Auto Club Revolution and Euro Truck Simulator 2. Whenever I open these games, my CPU IMMEDIATELY drops from 2.1 GHz to 1.57 GHz and my FPS is around 12-17 but when I close the game, my CPU clocks back up. Please help!

Specs:
CPU = AMD A10-5745M quad-core 2.1 GHz max (2.9 GHz max. turbo) 8 MB L2 Cache
GPU = AMD Radeon HD 8610G 1300 MHz max (I set it at 900 MHz)
8 GB of RAM
1 TB Hard Drive
Windows 8.1

Note: I am not opening both games at once. Just one is open at a time

 

[ewok93]

Sounds like it's overheating, what are your temperatures like?

 

[boeing186]

Sounds like it's overheating, what are your temperatures like?

118 F on idle and 130-140 F after an hour of gameplay

 

[ewok93]

Hmm, sounds like it might be throttling, change your power saving settings to performance, and see if you can find thermal throttling in your BIOS somewhere.

 

[boeing186]

It was always on performance. And since it's Windows 8.1, the laptop BIOS doesn't include the option to change thermal throttling