The framerate is more than 180hz in macOS Monterey ?!

Hi there,
after I upgrade my macOS to Monterey 12.0.1, I find that the framerate is more than 180hz in my experiment data, it was about 60h z before?!! How can it be? My Mac is makbookair 2017, my screen refresh is 60hz.

1637557610331

now the framerate is 300hz,what should i do ,i have no idea about it
:sob: