NetworkPerformanceSystem is a complete networking overhaul for Valheim focused on high‑ping multiplayer. It gives each peer its own RTT, healthcheck and bandwidth estimates, letting the server route around bad connections, adjust object ownership dynamically, and reduce ownership‑related delays and item loss.
Server‑only installs already improve send windows, ownership, schedulers and world updates for vanilla clients. Optional client installation adds latency compensation, live position reporting, cleaner disconnects and more efficient creature, fish and bird updates — with no version lock and full compatibility in mixed groups ⚙️