Dell inspiron 5406 2n1 cpu sudden downclock issue

Hello i hope you all doing well, i have this issue which my dell's inspiron 5406 2n1 cpu whenever entering a game it runs smoothly starting with the pl2 limits then after few seconds switching to the pl1 limits, the temps are good sitting at 60 without any concerns, but after few minutes the cpu clock speeds just drop roughly to 994 mhz without any reasons, i checked thermals still 60 which is pretty good, power limit not exceeded, no background tasks, pl2 and pl1 static limits are ok BUT pl1 dynamic limit is set to 8 watts out of nowhere and then the temps drops to mid 50s, i checked the drivers all up to date nothing to worry about here, so i don't really know why the cpu just after few minutes downclocks itself to 994-1093 mhz out of no where and the igpu is not even utilised fully, i even ran a hardware diagnostic and no issues detected.

So please if anyone know why this issue occurs don't hesitate to provide me the solution ♥️.

Thanks in advance.