Large folder of many small files - initial scan stuck on 0%

[bt90]

Is the folder on your Mac located on a HDD?

Try the steps in this post and check if it’s the same cause:

Scanning slow on MacOS

There is actually another command which can show the process itself and what happens with the read/write etc. sudo fs_usage syncthing which in my case has an output like: 16:32:36.098645 write F=32 B=0x1000 0.000008 syncthing.1030685 16:32:36.098658 write F=32 B=0xc97 …