Acer Helios 300 G3 571 / Heating Problem and Benchmark Results

SmokeyTR

Firstly, sorry for my basic English.

This is my second year with my predator. I used it very hard and for long hours and I think it has exhausted. At the first time of our relationship, I was able to play LoL with high graphics while Football Manager was open in the background but now I feel the heat, I hear the high sound of the fans and I hesitate to play any game more than 1 hour. I don't want to make it worse and I do research how can I make it better to prevent making it worst.

List of the things that I did until now:

-Ordered thermal liquid and I watched multiple videos about how to apply it.
-Ordered cooler to put it under it.
-Decreased CPU's power to %75. 
-Deleted all the unnecessary applications working in the background.
-Tested on userbenchmark.com and felt very bad about it, results are in the below.

Questions:
-What is the real effect of decreasing CPU's power, I'm not talking about undervolt btw. 
-Does undervolting healthy for my laptop and what is the value that I need to do for my model.
-What else can I do?
-Are there any other devices that I need to check after a long term of high usage like thermal liquid and cleaning the bags of dust of the fans.

UserBenchmarks: Game 14%, Desk 40%, Work 29%

CPU: Intel Core i7-7700HQ - 40%

GPU: Intel HD Graphics 630 - 6.4%

SSD:  HFS256G39TND-N210A 256GB - 66.2%

RAM: Kingston ACR26D4S9S8MH-8 2x8GB - 74%

MBD: Acer Predator G3-571

Thanks in advance.

andylb

Simple common problem. 
The underlying cause of most overheating is deteriorating or badly applied Thermal paste, repaste with Grizzly Kryonaut. video below of how to repaste a Helios series Laptop
https://www.youtube.com/watch?v=EKcb5k6N_2k
Many gamers also Undervolt with one of the custom Throttlestop profiles designed by one of our trusted gamers, they are safe and very easy to use.
https://community.acer.com/en/discussion/577183/throttlestop-undervolt-profiles-pre-made/p1?new=1