That i think everybody can agree on...

set a speed limit and maybe decrease the amount of mods 😭

Are you able to share the DebugLog-server.txt file from the VPS?

bugfix for you =   first close game and steam     open your installed folder of zomboid :  c: /user/ etc "Zomboid"   -delete the folder  C:\Users\<YOURNAME>\Zomboid\Lua  (this will delete your cached Lua datas , the UI Cache aswell+  some old references )  <--- this will  fix your main problem but to be sure it will work  correct  also  delete in same folder  this :   C:\Users\<YOURNAME>\Zomboid\Mods (this deletes odd behavioral depending on old /outdated /missmatching workshop ref  which can result  in your kind of error set in combination with above "lua" )     C:\Users\<YOURNAME>\Zomboid\Workshop (this folder includes workhop references to mods ,may cause also trouble, fits your error profil)<----- here not your mods ,only mod datas    then go : Steam\steamapps\common\ProjectZomboid\media\lua   and delete "Lua" in there.    open steam , right click zomboid / properties / installation /check installation integrity. wait this process done completely, and  start your game and enjoy it.       

Can you share your logs.zip file found in %UserProfile%\Zomboid?