@NattyliteSaber - Your log file shows thermal throttling happening at 90°C. This means that the company that built your laptop are cowards. The Intel specified thermal throttling temperature for the 8750H is 100°C. When thermal throttling starts too soon, you lose out on maximum performance.
Have a look in the Options window. There is a setting called PROCHOT Offset that has been set to somewhere around 10 which is causing this premature throttling. If there is not a lock icon above this setting, you should be able to edit this value. Intel default is zero. Most laptops set this conservatively to 2 or 3.
CPU power consumption is only 15W when this throttling is going on. When a 45W CPU is hitting 90°C at one third of its rated power, that either means the heatsink is completely inadequate or it is filthy. It needs to be cleaned and the thermal paste needs to be replaced with something like Noctua NT-H2. Thermal paste in a gaming laptop does not last forever. This should be considered regular maintenance so learn to do this procedure yourself if you want it done right. At high temperatures, some thermal paste does not last long.
There is no need to undervolt the core and cache equally. Download Cinebench R20 and do some testing.
CINEBENCH is a real-world cross platform test suite that evaluates your computer's performance capabilities. CINEBENCH is based on MAXON's award-winn
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Set the core and cache to an offset of -125 mV for a baseline run. Now start bumping only the core in steps of -25 mV. Many users see improved performance or temperatures when setting the core and cache to different values. The core can go up to -200 mV to -225 mV and still be stable. Do some light load TS Bench 1 and 2 Thread tests to test for instability.
Fix the cooling first. That is the main problem.