Acer aspire 5755g gaming problen when using battery

I met a weird problem that when i use my 5755g play games in battery mode the game will run slower or laggy compare to plugged in mode....although i set the power plan to high performance and also set the CPU usage to 100% but it also same...i know it is able to choose whether use intel HD graphic or NVIDIA high performance graphic but even i choose the NVIDIA the game also run slow.....can anyone expert help me in this problem pls?? T.T

 

Use GPU-Z to check if nVidia uses the same clocks when it's connected to external power source and when it's not.

 

The first picture is with battery and the second picture is without battery...izzit the problem of MCU ( memory controller load ) ? if so how do i increase it?

 

No- that's not the GPU then- everything looks fine.
Check the CPU- the easy way would be to run a benchmark like 3DMark on AC and battery and then compare not only the overall score but also sub-scores (including CPU score) to see what's causing the slow-down.

 

the first score is with AC power and the second is with battery...now i can confrim is the GPU problem not CPU....because i tried open 1 online game with AC plugged the FPS is about 50-60 but when using battery the FPS goes down to 10-20

 

I don't know how many times I have written this here on NBR but do not game on battery! This is just like this, gaming on battery does not give good performance for some reason, and many many therads later, we still don't know why.

However, some also belive that the battery/powerboard get overstressed of the request of full power. However, this is just going around, and it is something you can't just test and confirm. If you don't want to buy two of the same brand laptops and game on the battery with one and on AC with other and see how long both lasts.