Is it 57C at load or idle? Are you allowing enough room for the vents to circulate air.Forgot to mention that it is a DELL 15r 5520 and the fan is noisy.
CPU temp is 45 in windows but the fan is running at full speed!!
Is there nothing else running at the same time (while browsing). The cpu usage should be around 0-1% in task manager. You could check the gpu as well with occt or realtemp or many other utilities.The bottom feels so hot even while browsing actually. I don't feel comfortable with this.