High CPU usage on RPi4

[ubuntu748]

While using this plugin on RPi4, I noticed that the CPU was very high ~55%
Checking the logs showed a heartbeat of 1 second, while the comments in plugin.py said "# Simple heartbeat with a 10 secs interval". Changing the heartbeat to 10 seconds reduced the CPU to ~20%
Was this a typo in the value or changed for a reason?

Setting this to 60 seems to have no effect on the system and reduces the CPU usage to <1

Also in the description "pip3 install PyP100" does not work on an RPi as the default install path is not in the python $PATH.

I used pip3 install PyP100 --target <INSTALL_DIR>/plugins/Domoticz-Tapo
Where default INSTALL_DIR is /home/pi/domoticz/

Also confirmed working with Tapo L510 smart bulb (No dimming just on/off)