hello juan.tettamanti,
looks like you’re using top commands to gather the usage.
you should also note that, its by default configure as Irix mode, it expressed as a percentage of total CPU time.
please refer to [url]https://linux.die.net/man/1/top[/url], you may switch Irix mode to off (Solaris mode) by hit “I” (shift + i), where a task’s usage will be divided by the total number of CPUs; such average CPU usage should be more reasonable results,
thanks