Everything worked fine at home while syncing in lan.
But now I have another node at my friends place.
Problem:
Node A (my node) is working fine.
My upload bandwidth could be 10Mbit but I limited it to 600kbit.
The bandwidth from node B (friends node) could be 40Mbit and is limited to 20Mbit.
Connection from node A to node B is at its limit (600kbit)
But the connection from node B to node A is roughly 500kbit. So it is not using the full bandwidth limit.
The cpu and ram is not stressed by syncthing. Both are using under 10% after they scanned everything. We have no VPN.
Facts:
Both same Hardware (Xeon E3-1225,24Gb ram),
Openmediavault,
Syncthing version 12.3 (also tested with 11.x),
A–>B working fine, B–>A slow only working with 20%-25% of limitation