Open port 22000/TCP (and UDP for QUIC) on your router and forward it to your Syncthing device's internal IP address. B. Improve LAN Speeds Syncthinghttps://forum.syncthing.net
Often, slow speeds are not a fault of the software itself, but rather configuration issues, network restrictions, or hardware limitations. Here is a comprehensive guide to understanding why your Syncthing sync is sluggish and how to optimize it for maximum speed in 2026. 1. Identifying the Root Cause (Slow vs. Stalled) syncthing download speed slow
Direct connection, full local network speed. 2. Immediate Fixes: Network and Connectivity Open port 22000/TCP (and UDP for QUIC) on
In Settings > Connections , uncheck "Enable Relaying" to see if your devices can still connect. If they can't, you have a firewall/networking issue. Here is a comprehensive guide to understanding why
Make sure "Local Discovery" is enabled in Settings > Connections .
