What are your launch options? Also how did you install mastercomfig?

launch option:
-novid -nojoy -nosteamcontroller -noff -softparticlesdefaultoff -reuse

I installed the .vpk in the custom folder and I reinstalled my game to clear out all my previous cfgs.

Then I did a custom.cfg file to tweak some game settings and class binds with the _c.cfg format.

You have Windows, right? Try out setting different dxlevels (-dxlevel 98, 95, 90, 100) too see how it affects your FPS.

Adding these launch options should help a bit:

-freq 120 : sets the game's refresh rate to 120HZ for your monitor
-threads 4 : increases the number of worker threads available (according to your 7700HQ CPU, this is the ideal value)

And then you can test out these:

-r_emulate_gl
-high
-nouserclip

More information about each of these launch options can be found here: https://github.com/mastercoms/mastercomfig/wiki/Launch-Options

I am running on windows family edition, I will try these option out.

Here is my custom.cfg just in case:
https://pastebin.com/PHA3rMYb

Thanks!

clean ur laptops fans with compressed air

Hi, I would remove the following lines from your custom.cfg:

snd_async_fullyasync 1                 
snd_mixahead 0.1
snd_mix_async 1 

also, you can remove these lines if you use the no tutorial addon:

cl_hud_playerclass_playermodel_showed_confirm_dialog 1
tf_explanations_backpackpanel 1
tf_show_preset_explanation_in_class_loadout 0
tf_show_taunt_explanation_in_class_loadout 0
tf_explanations_charinfo_armory_panel 1
tf_explanations_charinfopanel 1
tf_explanations_craftingpanel 1
tf_explanations_discardpanel 1
tf_explanations_store 1
tf_explanations_tradingpanel 1

Other than what mastercoms has been saying.

Set power options to "High Performance"

^this

https://images10.newegg.com/NeweggImage/ProductImage/34-982-206-02.jpg

I also highly recommend getting one of these.

After putting basically any fps config on a "gaming" laptop, the biggest limiting factor is going to be your CPU temp, as mobile CPUs are designed to not overheat as much as possible so if they reach certain temperature thresholds they will downclock (technically desktop CPUs do this as well it just isn't as obvious due to better cooling/spacing of parts). Better cooling almost always = better gaming performance for a laptop.

My laptop (gt73vr 7rf) is clean and I have no temperature problem CPU runs at 32-40°C when idle and 55-65°C when playing TF2

What I find weird is that my CPU usage sits at 42% in game and the GPU is around 30%

snd_async_fullyasync 1                 
snd_mixahead 0.1
snd_mix_async 1 

cl_hud_playerclass_playermodel_showed_confirm_dialog 1
tf_explanations_backpackpanel 1
tf_show_preset_explanation_in_class_loadout 0
tf_show_taunt_explanation_in_class_loadout 0
tf_explanations_charinfo_armory_panel 1
tf_explanations_charinfopanel 1
tf_explanations_craftingpanel 1
tf_explanations_discardpanel 1
tf_explanations_store 1
tf_explanations_tradingpanel 1

Thanks will do.

I tried low-medium-high quality and I get about the same performance for all the different configs.

Alimentation is already set to high performance.

Temp while under load is irrelevant with CPUs like yours, if it reaches a certain temp it will drop it's clock and voltage to prevent it from going higher and prevent damage.

https://www.reddit.com/r/overclocking/comments/7t4n0g/i77700hq_throttling/dtaad9y/

*added emphasis

As can be seen with this user with the exact same CPU when the CPU is set for 3.2GHz it reaches a thermal throttle at only 67c. You having yours set for ~3.5GHz you're probably hitting a thermal throttle, and even if you aren't on your CPU you probably are elsewhere given the normal design of laptops, and yes even the ones that have the fans and heatsinks like yours. Given the setup of your laptops intake though, you would probably notice a decent benefit just by giving it a couple extra CMs from any surface below it (if you already have it normally sitting on a flat surface).

If you do buy a cooling pad which I still highly recommend btw. You will need to get one where either the fans blow into the laptop or more likely ones that you can adjust the direction either way.

-edit-
also I see you're mentioning that cpu usage is sub 50%, this is normal TF2 will not use 100% of an i7 with 8 threads.

-edit2-
Also just because CPU temperatures are reasonable doesn't mean the Voltage Regulator Module (VRM) isn't being thermally throttled which will cause a power throttle on your CPU.

I see, thank you very much for providing alternative solutions, I will probably invest in a cooling pad.
TF2 under using the i7 threads answers my initial concern.

I've experimented with different games without encountering this problem.
Xcom 2 in medium/high settings runs without any problems, CPU was running around 75-90% usage with a stable 70-5°C.

I rolled backed to an old config I used to run and things seems to be doing alright so I'll stick with it.

Sorry for the late reply and thanks again.