Fans go wild when screensaver is active - MacBook Pro 2017 I found a similar question here, but it's related to the laptop preparing for sleep. My settings while connected to power are:


Screensaver after 20 minutes
Turn screen off after 1 hour


I assume that my laptop won't sleep until after the screen has turned off - is this accurate? If so, any other indications as to why my fans go into hyper-drive when the screensaver turns on?
My fanspeed also was incredibly high when on OSX stock screensaver. Some virus scans and resetting of the MacBooks PRAM and VRAM later, I did a check and graphed the cpu usage. It was indeed the screensaver process which kept cpu at 100%.
It was set to a transition of pictures in a folder. Apparently the fade and float effect is too much for the mac. Switch to a blank screen with a clock shown. Fan speed went down to non audible since then and CPU is as low as can be during screensaver now.