fps drops overnight!

[fpsgoesdown]

Hello, i have a asus x550ln laptop with a Intel Core i5 processor. last night i was playing lol with fps 60+ but when i woke up the other day my fps went from 7 to around 50 up and down all the time. i have no idea what to do pls helpm me.


Specifications
Screen
Size / Resolution 15.6 "/ 1366 x 768
16: 9 ratio
LED backlight
Screen Surface Anti-glare
Processor
Processor Model Intel Core i5 4200U 1.6 GHz
Memory
Memory Size (inkl./max) 8 GB / 12 GB
Memory Slots (Total / Free) 1 pc / 0 pcs
Memory SO-DIMM DDR3 1600 MHz
Storage
Hard drive 500 GB, Mechanical, 5400 RPM, SATA
Optical drive DVD ± RW (write / read)
Graphics & Sound
Graphics NVIDIA GeForce GT 840M
Memory dedicated 2048MB
Network
Bluetooth v4.0
Intel Wireless Display (WiDi) No
Wireless protocol IEEE 802.11b / g, IEEE 802.11n
Wired standard Gigabit Ethernet 10/100/1000 Mbit / s
Connections
Docking Aid No
USB 2.0 connection 1 pc
USB 3.0 connectivity 2
RJ-45 connector 1 pc
VGA connection 1 pc
HDMI connection 1 pc
3.5 mm audio connector combo, in / out 1 piece
Battery
Number of battery cells 4 pcs
Capacity 37 WHR
Keyboard
Numeric Keypad Yes
Backlit No.
Built-in touchpad pointing device
Language Layout Nordic (sv / no / fi / dk)
Environment and energy
Certifications Energy Star
operating
Accompanying the operating system Microsoft Windows 8.1, 64-bit
Operating Nordic Language (en / no / fi / dk / a)
General information
Memory card reader SD / SDHC
Integrated webcam Yes
Dimensions (W x D x H) 380 mm x 251 mm x 317 mm
Weight From 2.3 kg

 

[mangaman]

Did your computer install any updates before you turned it off? If so, uninstall them and see if the performance improves. You might have accidentally increased the games graphical setting, some how or another. Just turn them down and see if the performance improves as well.