Razer Blade Stealth 13 fan control

Hi everyone. I have recently bought Razer Blade Stealth 13 with i7 1165G7 processor. And noticed that fans often turn on even when no work is taking place. I hear fans when i entering BIOS, i hear fans when i just open some pages in browser, but i see in windows task manager that there are no perfomance tasks running. I turned off Intel Turbo Boost in BIOS, it looks better but still exists. And it's only when charger plugged in. I set 'Battery Saver' mode in Razer Synapse and set 'Power mode: Battery Saver' in windows settings. It's realy better but sometimes laptop turn on fans. I can't understand why fans are running when there are no perfomance tasks(max 20% usage in Task Manager). Could someone give advices how to fix it? I know that fan noise it's okey when you do something complex(like gaming or rendering) but i don't want to hear fans when i reading news in browser. Thank you!