My laptop is Dell XPS 15 9550 with Gtx 960m 2Gb, 8Gb ram. It suddenly performs very bad a week ago, the GPU usage always becomes very low after a few mins of gaming which leads to low fps and it never goes up again until restart. It happens in every game. It used to work fine with just some sudden drop in GPU usage and it always went back to high usage without any problem.
I have tried to flashback to older bios, revert the Windows update and use DDU to uninstall the display driver and reinstall the Dell-certified driver 442.74. I have also tried to disassemble the laptop and disconnect the battery and press the power button to drain the battery but the problem still persists.
The Windows power option has been set to maximum performance. I have also done all the necessary settings in the Nvidia control panel such as using the high-performance Nvidia processor and setting it to prefer maximum performance.
Temperature is not the problem as they keep at 70-80 degrees underload with laptop cooling pad and throttle stop undervolting. I have used throttle stop with the same settings long ago and It is stable without any issue. I have created two separate log files with Hwinfo64 and saved them in the google drive below. One of them is for the Firestrike Benchmark and the other one is for gaming.
https://drive.google.com/drive/folders/1uEQ1hcinR33dByY8R7uBIq_ob2yQDUDm?usp=sharing
FireStrike marks: https://www.3dmark.com/fs/26487222?locale=en_GB
One thing that I have noticed so far is that the Memory controller load drops while the GPU usage is low (observed from the GPU-Z log file) seems like it is what causes the low FPS. I would appreciate any help in this matter.
I have tried to flashback to older bios, revert the Windows update and use DDU to uninstall the display driver and reinstall the Dell-certified driver 442.74. I have also tried to disassemble the laptop and disconnect the battery and press the power button to drain the battery but the problem still persists.
The Windows power option has been set to maximum performance. I have also done all the necessary settings in the Nvidia control panel such as using the high-performance Nvidia processor and setting it to prefer maximum performance.
Temperature is not the problem as they keep at 70-80 degrees underload with laptop cooling pad and throttle stop undervolting. I have used throttle stop with the same settings long ago and It is stable without any issue. I have created two separate log files with Hwinfo64 and saved them in the google drive below. One of them is for the Firestrike Benchmark and the other one is for gaming.
https://drive.google.com/drive/folders/1uEQ1hcinR33dByY8R7uBIq_ob2yQDUDm?usp=sharing
FireStrike marks: https://www.3dmark.com/fs/26487222?locale=en_GB
One thing that I have noticed so far is that the Memory controller load drops while the GPU usage is low (observed from the GPU-Z log file) seems like it is what causes the low FPS. I would appreciate any help in this matter.