Help!

[Kweble]

I have a Dell Inspiron 5559. It loaded with i7-6500U ; 16GB 1600Mz Ram ; 1Tb Hard-Drive ; AMD Radeon R5 M335 4GB Gpu. I bought it 2 years ago. It worked fine. but now its giving me some issues. I used to get above 70+ fps in csgo at 100-95% Gpu usage and 80-60% Cpu usage. But now i get below 40 fps and it drops to 20 fps and below and laggs for like 40 second to about a minute. This happened to me when i disconnected the battery cuz its dead i'm running it on ac adapter. I used to get my older best performance when the battery was fine but it used to drain the battery and locks the computer with the low battery indication when the battery reached below 50%.This never happened to when i bought the laptop. I have provided a task manager screenshot of what happens to me right now (CSGO is running in the background) the gpu stays under 40% sometimes upto 60%and the cpu drops to as low as 1.00Ghz it is below base clock ,it boosts upto 2.99Ghz when I dont run any game. I cannot get any help from Dell cuz the laptop was imported from US .Please Help I am so fedup of this lockdown.

[Sauron]

Check your temperatures - maybe the heatsink got clogged and your laptop is throttling hard.

[Kweble]

3 minutes ago, Sauron said:

Check your temperatures - maybe the heatsink got clogged and your laptop is throttling hard.

They are below 80 C

[PorkishPig]

Try the following:

• If your computer is entering Battery Saver prematurely, go into your Battery settings turning off "Turn battery saver on automatically if my battery falls below:". Get to this setting by entering ms-settings:batterysaver into Run (Win+R).
• Make sure that your power settings are not entering "Power saver". Having this selected will severely limit your performance. View this setting by entering control powercfg.cpl into Run (Win+R).

[Statik]

Ensure you're not on battery save mode, and it's on "high performance" or whatever the options are. And I believe it's common for laptops to perform better while plugged in, so it could be a battery issue and just need to be plugged in to game on it.