Excessive load on a NUC i3 that has only HASSIO,

Hi, is there an (easy if possible) way how to troubleshoot what is going on with my NUC. It does get slow sometimes, and other times stuck completely (at least I think so), forcing me to restart HASSIO (with docker restart homeassistant) or to reboot the host

It has only HASSIO: it does have 4 IP camera streams (but not motion eye, zoneminder, deepstack or other) that gets directly from IP cameras, and around 100 various devices (zigbee light, zwave, wifi esphome)

Cattura