@xeridox: Do you use SQLite or MySQL on your server? When it hangs, does the game freeze completely, or are you still able to move around (so just world generation pauses)? Please try out the latest bugfix, if it does not solve your issue, eventually create a now topic for that
About the textures, currently it's only possible to use texturepacks^^
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Another bugfix is available, it mainly fixes some multiplayer related issues
Bugfix 2016-01-31:
- [Change] Slightly increased amount of saplings you get from a lemon tree
- [Change] Increased performance when using MySQL
- [Change] Old world backups (>2 weeks) in ".backup" subfolder will be deleted automatically now (nur SQLite)
- [Change] Reduced gap between images and walls
- [Change] Hostile animals no longer hunt you if 'general->invulnerable' permission is set to true
- [Bugfix] Fixed chunk loading problems
- [Bugfix] Fixed server crash when player connect took too long
- [Bugfix] Fixed issue with players being unable to connect to a server
- [Bugfix] Fixed issue when too many construction elements were placed in the same chunk
- [Bugfix] Fixed bug that caused the server to generate the world extremely slow sometimes