WD myCloud and slow backups again - the WD myCloud Mac App and the restsdk-serverd

I thought I had solved the slow backup problem with my WD myCloud, but of course (being technology) it became slow again. This time I found the restsdk-server process on my WD myCloud eating up almost all free memory of the WDmyCloud drive, which almost halted any file transfer. Solution was killing the daemon.

WD myCloud and TimeMachine - (finally) a fast backup

Fiddling around with many settings and being quite annoyed by the incredibly slow backups with MacOS 10.11 (often one day was not enough to do an incremental backup) on my WD myCloud, I finally found the solution accidentally. Thanks and kudos to StackExchange where I found the solution. Backup without emergency brake on. I post the necessary commands here just for sake of this blog being my external memory.