Hello @Jordi Smeets
With the VHD file cached locally, you will see some improved performance in some scenarios. Reads should be serviced very quickly in that scenario. Writes still need to be written out to the network locations, and using CCD usually means that you're writing significantly more data, since you're writing it to multiple locations.
while using CCD, the data is being flushed out continuously, but depending on the speed of the connections to your SMB servers, it could get backed up. The FSLogix service will try to flush the local changes to the remote systems about twice a second, IIRC. So on a fast connection your disks should stay very up-to-date.
Best Regards
Karlie
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