How to deal with freezes caused by autofs after network disconnect

I mount four servers (3 via cifs, 1 via sshfs) using autofs. auto.master /- /etc/auto.all --timeout=60 --ghost auto.all /mnt \ /server1 -fstype=cifs,rw,credentials=/etc/.smbcredentials.txt,uid=1000,file_mode=0775,dir_mode=0775,users ://server1/ \ /server2/ -fstype=cifs,rw,credentials=/etc/.smbcredentials.txt,uid=1000,file_mode=0775,dir_mode=0775,users ://server2/ \ /server3 -fstype=cifs,rw,credentials=/etc/.smbcredentials.txt,uid=1000,file_mode=0775,dir_mode=0775,users ://server3/ \ /server4 -fstype=fuse,rw,allow_other,uid=1000,users,reconnect,cache=yes,kernel_cache,compression=no,large_read,Ciphers=arcfour :sshfs\#user@server\:/home ``` Everything is fine when I make a clean boot. I connect to my network (using a VPN) and autofs mounts everything. # Problem When there is a network disconnect, e.g. when I hibernate my laptop or connect to a different network, autofs causes my explorer (dolphin) to freeze because it tries to load the remote share infinitely. It becomes unresponsive and does not even react to SIGTERM commands. Sometimes I am lucky and calling sudo service autofs stop and sudo automount helps to resolve the issue. However, often it still stays freezed. Sometimes even, my whole dock freezes due to this making all applications unselectable. Then I have to make a full reboot.. I've searched for weeks now for solution how to deal with autofs in such situations. Before using autofs, I had everything mounted via /etc/fstab but that also required a manual remount after every network interruption. I thought autofs would help me here but it causes me even more trouble. # Questions 1. Is there any point I overlooked that could solve the freezing problem? 2. Is there a completely different approach that may be better suited for my situation than autofs? PS: I'm on Kubuntu 16.04