Very slow file copying with FreeFileSync, plus system freezes part 2

[sisom]

I hope it’s okay to start a new thread based on my previous thread of the same title, because I’ve discovered that the problem is with FreeFileSync. There are many forum posts on their forum, about people having slow transfers with FreeFileSync, some having the ‘zero bytes’ complete stop that I’ve been experiencing. When I copy the same files in FreeCommander or Windows Explorer, I get 60MB/s consistently. No going up and down, no variation, no going down to zero, no problems at all. So I’m copying all the folders over manually with FreeCommander, then I’ll only use FreeFileSync to check that both drives have the same files, and allow it to do any further copying (which is normally only 50GB or thereabouts.)

[xrobwx71]

If you want the sync part try https://allwaysync.com/

I’ve been using it at work for about 8 years. I use the paid version as one of my sync jobs goes to an offsite NAS at my house.

Speeds are fine. One of my sync jobs is between an HDD and a NVMe SSD. The speeds are what one would expect from the bottleneck of the HDD.
Another job is between 2 NVMe SSD’s and it’s blazing fast.

[Bruce]

I guess the speeds may come down to whether the developers have written their own code, or just piggy-backed off current Windows dynamic libraries and API’s.

[Bruce]

@sisom - anything more you’d like to add?

[Bruce]

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