G15 5520, stuttering in games

Based on the information you provided, it is possible that your laptop is experiencing thermal throttling. When your CPU temperature exceeds a certain limit, it may reduce its clock speed in order to prevent damage to the processor, which can result in a decrease in performance. This can also cause stutters and crashes when running demanding applications like games.

You mentioned that the CPU temperature was over 75 degrees Celsius during the benchmarks, which is quite high. I would recommend checking the cooling system of your laptop, including the fan and heatsink, to ensure that they are functioning properly and that there is no dust or debris clogging the vents.

You may also want to consider using a laptop cooling pad to help dissipate heat more effectively. Additionally, you can try lowering the graphics settings in the games you are playing to reduce the load on your GPU and CPU.

If the issue persists, it may be worth contacting Dell's customer support for further assistance or to determine if there may be a hardware issue with your laptop.

Here are a few things you can try to increase system performance!!!

1. In “System Properties” set  Performance to  “Adjust for Best Performance”
2. Then adjust “Virtual Memory” as needed.  “More is better but it uses Hard Drive space”
3. Reboot.
4. Do a “Disk Cleanup”
5. Then a “Disk Defragmentation” (Skip if SSD is installed)
6. Open an Administrative Command Prompt and Run chkdsk c:/f    “Yes to run after reboot”
7. Reboot.

I have the same model and also the same problems. Nothing helped and then I got the idea!

It was all because of my Bluetooth mouse. It made everything stutter a lot now and then even during normal work (only Chrome, photoshop was open). Now I have a cabled mouse connected and everything is running smoothly. Maybe you are using the same shatty BT-device or similiar BT-devices like me?

I had the same problem, The game stutters because it is hitting the voltage limit of the gpu. Only way I managed to fix it was to undervolt my gpu and now I get good performance. Check this video to learn how to undervolt https://youtu.be/rlLi6-ac0uE