System Monitor can't edit preferences

System Monitor applet sometimes crashes when I left click it, and also I cannot seem to scroll up to edit preferences.

Yikes!

That’s a lot of things you are monitoring!

The upstream for this is

Could be my docker containers?

If that is what is contributing to each line … yes you seem to have lots and lots of instances running

In this case, it is likely your Docker containers combined with any other virtualization technology you may have installed. The systems generally use bridging to forward the traffic from the host to The container or VM.