Hi, So I just got an acer predator helios 300, 5 months ago and the performance has just been terrible everytime I play a game or just have multiple programs running the laptop would then start overheating up to 80 or 90 and I thought that was normal since I don't really have the knowledge about Gaming Laptops but the laptop kept on crashing whenever I stopped playing a game or sometimes when I'm ingame so I looked for some possible solutions for this matter I thought about getting the laptop itself fixed at my local acer store but currently all stores right now are closed so I then try to look for some other solutions and I found undervolting.
So I looked up some videos and tutorials on what's the best way to undervolt your laptop and I found one, So I tried to undervolt my laptop using the Intel Extreme Tuning Utility program but when I try to change the settings it just comes back the default settings? So my question is, Is there any way I can fix this in the Extreme Tuning Utility Program cause when I hit apply it just comes back the default settings..
Here's an image on what my settings look like right now:

I really need help with this one, Since i just got this pc like 5 months ago and it started overheating everytime when I play a game, Any help would be appreciated!