game lags when plugged in but works fine when on battery.

[ruderocky]

samsung np300e5x - s01in
window 10 pro 64bit
GPU - nvidia geforce GT 610m 1gb ( i know it's low end GPU, still i could play a lot of games with lower settings)
i5 3rd GEN, 8GB ram (1333mhz), 750GB HDD
Previously it used to work fine, But from few months games are lagging when plugged in, but runs absolutely fine as it used to be, on battery.

checked the following:
power profiles( altered and changed every settings that can be done in power performance profiles)
GPU temp are same when plugged in and on battery (although temp are as high as 93 degrees celsius while gaming) so i guess heat is not an issue.
no uneven CPU usage or heat issues (around 73 degrees while gaming )
updated to latest drivers

I checked through afterburner , while plugged in the GPU usage dramatically drops to 30-50%, and when plugged out it quickly reaches around 90% and above , (while gaming).

plzzzz help!!

any suggestion would be highly appreciated

 

[Hellfire13]

update ur BIOS...worth a shot...

 

[hang-the-9]

When you plug it in, do you remove the battery? I have seen laptops drop down in speed when on wall power but with battery removed. I have two Lenovo laptops that do that, removed battery to keep life span of it longer, and speed dropped by 75%.

 

[ruderocky]

update ur BIOS...worth a shot...

yeah, i had already updated the latest bios updates provided by samsung , Didn't see any change . I even tried by replacing with older bios versions, but all in vain.

 

[ruderocky]

When you plug it in, do you remove the battery? I have seen laptops drop down in speed when on wall power but with battery removed. I have two Lenovo laptops that do that, removed battery to keep life span of it longer, and speed dropped by 75%.

thankzz for the reply, but i already tried doing that.
with battery plugged in, plugged out
without battery plugged in
nothing works

 

[Hellfire13]

have u changed the power chord???

 

[ruderocky]

have u changed the power chord???

nope