[yogi62]

Thanks all for your respones. Update as follows:

kovidgoyal:
I regularly back up my whole primary drive to external drives and clean down the primary drive

Today the initialization took 4min 21 secs. Shutting down and restarting Calibre took 10 secs on two subsequent re-starts.

Betteread:
Two libraries no synchronization
No plugins
Only default columns

Dalton ST
Slower machine loads faster
Faster machine has 12GB pagefile with 32Gb Ram and Microsoft machine base score of 7.9

theducks:
Full permission to ALL users