how fixed to low prosses CPU?
Is this during initial scanning for a new folder? Or after your syncthing cluster has been going for a few days?
High CPU usage at first installation/scan is not uncommon, but it will settle down soon (or after a bit longer if it’s a massive folder or slow CPU).
Hmm all his folders are idle?! What does the log say?
if you share a folder with one of the 100% proc users. and if the user is restarting somewhere else I proc 100% too. what is the cause? how to fix it?
You need to provide the logs to be able to explain this.
dipath log? And what is the file name?
Syncthing logs to stdout by default, or check the web ui.