Question Cpu constantly overheat when turn on turbo boost

[dannish]

I'm using 2019 hp pavilion 15 gaming with i7 9750H and GTX 1650. The laptop always freeze and buzzing at the same time when heavy gaming and only figure recently that the cpu constantly overheat. Im using throttlestop to monitor the temp and it shows that its thermal throttling even when idle the thermal limit lights up sometimes. Tried undervolt, lower the turbo boost frequency, nothing happen until I disable the turbo boost the laptop now stable without any freeze and buzz. The fan is clean (speed cant be adjusted) , thermal paste already replaced this month. Honestly at this point I think turbo boost is just a gimmick. I still have to manually turn off turbo boost if I want to play games on the laptop.