Slow Upload to B2

I am trying to upload a backup to b2 and it is incredibly slow. My initial upload was fairly quick and was able to upload about 15 GB in short order. Now, I am trying to do another upload a week later and it is much slower. It seems to be hung on “##### files need to be examined (##GB)”. My upload speed on my computer is shown as 2kB/s. If I try and upload to b2 with a direct call to their s3 buckets using amazon aws-cli, it is much faster (~1MB/s). My command for backing up to b2 is fairly simple. It is just:

duplicati-cli backup “b2://bucket” “/home” --auth-username=xxx --auth-password=xxx --compression-module=zip --no-encryption=false --passphrase=xxx and then several excludes.

Is there something I am doing wrong here?

What version are you on? Updating to fixed my slow B2 upload issue.