Cubase 10.5 video troubles

Hi everybody,
I loaded an 8’ video in Cubase and I just added a chord track with four chord, no plugins, nothing recorded yet and my Macmini temperature was suddendly around 105°C and cpu usage at 185%… (system activity monitor) :flushed: :thinking:
How is it possible? In the attachment my system specs (ssd hd 250 Gb)
Thank you for helping me
Schermata 2021-06-15 alle 20.24.48