I was able to start syncthing on my raspberry pi using link I mentioned above, also I added these lines into my /etc/monit/monitrc :
check process syncthing matching "syncthing"
start program = "/usr/sbin/service syncthing start"
stop program = "/usr/sbin/service syncthing stop"
if cpu usage > 95% for 10 cycles then restart
Well, I remember when I just started syncthing on my rpi for the first time, it tried hard to sync all my 4 gb and maybe struggled all the night, I don’t know, but in the morning it was ok. Now I do not see high load at all. I run also samba and transmission, everything looks smooth.