I have tested synchronization on folder aren’t using the encrypted feature and has large files were updated frequently, incremental block synchronization is normal on the 1.29.3 official version and is fast after file was updated, but incremental block synchronization does not seem to be available on the 2.0 beta version. I wonder if the 2.0 beta has changed the incremental block synchronization feature?
I asked a follow-up question on this the first time you posted it.