RAF Queue

confused :(

very confused, before this i am backend developer but now confidences is down, didn't nothing about nodejs

Here each time the screen gets updated when set timeout function is invoked. And raf gets invoked everytime whenever screen is about to get updated. In that case this should be linear and raf should run in the same rate as of setTimeout right ?

SetTimout --> updates screen (just before) updating --> raf ()

Then how can raf be running slow ?