Are you under the network firewall? Your screenshot shows MUDEC_00305/00333 timeouts while fetching node data, followed by routing errors. Please fully exit Mudfish, run Mudfish Launcher as Administrator, enable the fire icon (-t) on the sign-in screen, and reconnect. Also disable the custom “League of legends” Multi-Path item and test only the official “League of Legends” item in Basic mode with Auto Selection. If it still stops at 50%, run Self-Diagnosis and send the results plus Status → Process → Core logs.