There was an update to fix a number of security issues in the Samba library. You can read more about it here: OSMC Security Update for OSMC 2016.04-1 and earlier - OSMC
If you update the Raspberry Pi, it sounds like you will experience issues on that device too. These changes are not exclusively for the Vero.
Have you tried the solution in this post: Can't reach my SMB shares after the last OSMC update! - #5 by maker3?
I am sorry to hear that. You should find the Vero 2 significantly faster than the Pi. H265 video decoding is important to some people, and will become more relevant as more videos are encoded in the format. We also have an imminent Android release which will let you use Apps like Netflix on your device.