Windows 10, version 1709 now available

That update was one of the worst Windows Update I experienced :-( (and I started with Windows 3.1 !).

It caused such a huge mess on my Lenovo all-in-one that it was hardly usable; the CPUs (i7-4558U @ 2.8 Ghz !) was running at a base level of 40% !

Imagine then starting a Browser, Outlook, etc...

What happened ? 

1. The update itself took hours (no crash!)

    No idea why

2. The update let a lot of mess in the registry (authorizations,...)

3. It started services which were deactivated before 

   ICS,...

Upon the update, I noticed that

1. a Service Host App Process running a.o ICS was using 30% of CPU

2. Event log filled with that kind of stuff

  The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID
{6B3B8D23-FA8D-40B9-8DBD-B950333E2C52}
 and APPID
{4839DDB7-58C2-48F5-8283-E1D1807D0D7D}
 to the user NT AUTHORITY\LOCAL SERVICE SID (S-1-5-19) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool.

It took me days to repair,after a lot of research, the registry and the DCOM authorizations; and even after having followed all instructions, I still get that my account is not granted Local Activation permission for the COM Server application with CLSID  {D63B10C5-BB46-4990-A94F-E40B9D520160}  and APPID {9CA88EE3-ACB7-47C8-AFC4-AB702511C276}. I suspect I I did not fixed all flaws.

My PC is a regular home office workplace mainly with MS Office Products, no special devices (all-in-one), no development tools. 
Worst of all : I'm starting to wonder how the telemetry in place is really helping me ? That was one of the sale argument for Win10.

I'm very disappointed here.

If it would be possible, I would recommend people not to install that one