https://www.bleepingcomputer.com/news/google/new-google-chromeos-updates-cause-100-percent-cpu-usage-heating-issues/

Recent ChromeOS updates cause a Google Play Store service to utilize 100% of the CPU, making devices hot and experience performance issues.

Since users began updating to ChromeOS 85.0.4183.108 and later, apps are running erratically, devices get hot, fans are running at high speed, and the battery is drained too quickly.