Game FPS drops to 0 when entering dedicated server world

Hey. Tried adding all packs to pre-existing dedicated server world. It takes about 10 minutes to inject custom locations for client when connecting. After connecting fps immediately drops to 0 and never goes back. 

Do you have any ideas how to fix it? Might it be because of the patch from 27 Aug 2024? Maybe I should contact Jotunn developers?