Alienware 15 R3 - Terrible Performance

This laptop was a piece of shit from the start. Contacted support from the very beginning. The first time they picked up my laptop and brought it to the repair center, they've replaced the speakers while i specially said that it had performance issues and no speaker issues. So i had to send it back. They replaced the motherboard but i'm still having performance issues. I can only play very light games without lag. 

Battlefield 1 on lowest settings is unplayable.

COD WW2 is unplayable on lowest settings.

Elder Scrolls Online unplayable on lowest settings.

And so much more.

This is advertised as a gaming laptop that costed me about €1800 but it can only run candy crush and a browser without terrible lag.

System specifications:

i7-6700HQ

Nvidia Geforce 1070

8GB RAM

Latest drivers

Latest bios

Nvidia Control Panel set to performance

According to Alienware Command Center the laptop is set to performance.

Laptop plugged in