Distant vault through VPN: "File system operation timed out" on startup


I’m used to work with a vault located in a distant drive through a VPN.

Since several weeks I have trouble to startup this vault: “File system operation timed out” comes after a long loading time.

Windows 10
Obsidian 1.5.3

Things I have tried

  • By insisting and restarting Obsidian several times, it works sometimes!
  • Vault files are of course accessible with the windows explorer
  • I’m able to open a local vault
  • Reinstall Obsidian

Thank you for your help!