Well... The reason I posted here was that I Was on the hunt for a solution to my slow startup. This morning I desided to do a complete reinstallation of w10. I now have a huge number of errors...

well done rezpower. A much much nicer approach then mine. And my situation is the same as yours. Guess OneSyncSvs is not showing because I do not use OneDrive....

I have the exact same issue regarding the first four of the five faults given in OP.
but mine appear at startup so startup takes for ever... :-(
no sync host session in services so i guess it has a...