Problems for external clients when connected to modded server(no matter which mod is being used)

Welcome to the forums.

The list of your enabled mods (both server and client ones) would be helpful.

It is possible that even though the mods are up to date, they might not be compatible with current version of DST or each other.

Cheers, I feel welcome.  

I'm not certain that it would be a compatability problem though as we tried mods individually(only one mod enabled) as to see if it was such a problem.

Nonetheless i will add the list of mods anyway.

 

List of said mods;

Client;

• Combined Status(by rezecib, Kiopho, Soilworker and hotmatrixx),
• Gould Boulder Map Icon(by Splooze),
• Minimap HUD(by squeek)

Server;

• Additional equipslots(by ChaosMind42),
• Archery Mod [DST Version] (by Zupale X)
• Ash Fertilizer (by Mouse)
• Asuna (by Riverswim)
• Birdcage(timebased) (by _Q_)
• Caitlin (by Patriarachnid)
• "Digable" Reeds (by Ysovuka)
• Dipper Pines (by Mileena)
• Extra Equip Slots (by xVars)
• Fast Travel (by Isosurface)
• Flower Box DST (by Jaden Vanadium)
• Health Info (by xVars)
• HoW Morgan Freeman (by Umbrella Darknostic)
• Increased Stack size (by ChaosMind42)
• Long Lasting Tent (by [BSy] Archangel)
• Michael The Fox for DST(by MikeyTheFox)
• Minable Gems (by star)
• Mushrooms Seeds (by Aire Ayquaza)
• Personal islands (Newbies version)(for friend) (by Astro)
• Season Starting Items (by[BSy]Jupiter)
• Spike Trap (by Lishid)
• Structures and More... (by Oscosh, Inc)
• Tahu (by Melanserka & CrazymaN)
• Tamamo(OS 3.0) (by Silhh and Arcade)

I have tracked it down to Ash Fertilizer mod, i.e. with this mod enabled the client experiences network synchronization issues that can cause symptoms you've described.