If this were true, OP would see Steam as a user-mode process taking up the CPU time. Since the OP image is sorted by CPU time and the process isn't visible, it's gotta be those kernel threads that aren't displayed by default.
cheviotveneer
joined 2 years ago
OVH Strasbourg campus on March 10, 2021: https://corporate.ovhcloud.com/en-ie/newsroom/news/informations-site-strasbourg/