Resilio Sync 2.5.4 and 2.5.5 performance and sync problems in Sync Troubleshooting Posted July 15, 2017 · Report reply I've updated Resilio on both Macs to 2.5.6(1034) and 1 Arch Linux NAS also to 2.5.6(1034). Systems don't hang anymore cause of crazy CPU-times. Also Predefined host option are available but somehow in some sync-folders they got deleted. I didn't remove them for sure! 1 folder the progress "0% - a few seconds " is gone. 1 is still showing "0% - a few seconds ". On Arch linux last transfer is juli 03 and connected Mac is today. That's a bit odd.