Laptop performance decreases when on battery

[raghunath19]

So when I disconnect my laptop from charging after like the battery is at between 40%-60% my performance of my laptop decreases, I can see frame dropping even while watching videos in youtube(video probably streaming at 720p 60FPS or 1080P ) or netflix. I've kept every power setting I could find in high performance, even switchable graphics are set at high performance. It's so frustrating when that happens I usually keep my laptop charging when that happens.
I'm using a Lenovo Y40-80 Laptop Windows 8.1 which has an amd gpu M9 275 2 gb

 

[Laptop_Nerd]

Hi,

Have you also tried doing a clean install of the graphics card driver?
- Go to Device Manager and uninstall the AMD graphics card driver.
- Next is to open Programs and Features then uninstall anything related to AMD.
- Once completely uninstalled, download and install the latest driver.
- Here's the link: http/support.amd.com/en-us/download
- Reboot the laptop once the latest driver has been installed.
- If all these will not work I would also consider checking the Power Options settings as well making sure everything is set to High Performance.

Hopefully this steps will help.

 

[1shado1]

Your situation is not abnormal:

http/superuser.com/questions/855372/why-are-my-games-slower-on-battery-power-even-with-the-power-plan-set-to-high-p

"Running a high-performance GPU at full speed while on battery can damage the battery or require more power than the battery can safely supply

High-performance mobile GPUs can require significant amounts of power to operate at full speed. The GTX 765M requires 75 W, while top-of-the-line
mobile GPUs like the GTX 780M and GTX 980M can consume up to 122 W.
The GPU is not the only power-hungry part in a laptop. A modern Intel performance mobile CPU typically draws about 47 W at
full power. In addition, you need to power other system components, such as the display, disk, and USB peripherals.
When you add it all up, you might need anywhere from 140 W to 200 W to operate a gaming laptop under full load depending
on your system configuration.
A typical battery in a gaming laptop can store about 60-80 Wh of energy. Most Li-ion batteries are not designed to be
discharged faster than twice their Wh rating per hour (2C). In addition, sustained discharge at rates exceeding 1C can
significantly reduce the overall service life of the battery. Continuously pulling 150 W or more from a typical 77 Wh
battery is not a great idea and your battery could overheat and fail or even catch fire. While it's likely the battery's
own protection circuitry would shut down the battery if overloaded or overheated, a device should never subject its battery
to an unsafe load at any time during operation.
To avoid overloading the battery, the GPU will typically throttle to a lower clock speed. The GTX 780M on my personal laptop
will not run faster than about 400 Mhz when on battery. Lower clock speeds reduce power consumption not only by having transistors
switch less rapidly, but also by allowing lower core voltages—power consumption and heat dissipation scale with the square of voltage."

 

[1shado1]

You're very welcome. Glad I could help!