Hey VampWolf,
Did you clean the laptop and change the thermal past since you have it?
2 years ago my first thing was to undervolt the CPU in my GL503VM and replace the thermal past and pads. My temps were max 80° during high load after, I also disabled Turdbo Boost as it caused FPS drops in CS:GO.
Recently my temps increased, it was about 55-58° in idle so I repasted it and cleaned up the dust from the coolers. It is now 40-45° in idle.
I used Thermal Grizzly Kryonaut and Thermal Grizzly Thermo Minus Pad 8 0,5 and 1 mm.
Hope that helps,
Sznyoky