Read the statement by Michael Teeuw here.
NPM high CPU usage...
howdy folks, just noticed that my cpu is running higher than normal so i taught restarting my mirror would sort it out but it didnt, even with pm2 magicmirror stopped its still showing that its running high. i did
topand it shows npm running up to 25% on cpu
tried to upload pic but having problems, should see screen shot when click on like
restarting my pi seems to solve problem for a while, it reoccurs!