OK, I did post the same thing to the serviio forum, just haven't heard back yet.
I did set it up with the Sony Bravia 2012 profile. I read that early on, and remembered to do it.
And I turned metadata off--the Sony can't read it anyway, and I read as you said that it really slows things down.
I've had serviio running on and off, mostly on, since Wednesday.
I think it comes down to correctly adding those mapped folders.
After making this post, I found something on another site that seems to address my issue. They explain a fix, but I can't quite figure it out--maybe you can. This was for the TVMobili server, which I briefly tested out, thinking that maybe serviio was just never going to work right for me. But even though the instructions were written for TVMobili, I can at least figure out that they are universal.
Here's what they said:
TVMOBILi will happily stream content from a network share, to add a network share to TVMOBiLi you need to do the following:
Adding content using a mapped drive is a little bit of a problem on Windows due to the way that Microsoft map network drives on a user by user basis and not machine basis. This means that drives that you map using explorer are not visible to TVMOBiLi. Here's Microsoft's official line:
To solve this problem you need to do the following:
1) Open Control Panel->Administrative Tools->Services and right click on the tvMobiliService in that list.
2) Choose 'Properties' and change the logon account that the service uses to be your own personal logon account for Windows.
3) Restart the Service.
4) Ensure that there is a user on your NAS box that is EXACTLY the same as your Windows user account. Most NAS boxes provide you with an admin interface to accomplish this.
5) Use the full UNC path (\\sever\share) to add the NAS box into TVMOBiLi.
So, steps 1-3 are what I had tried before without success. I've retried it several times since too.
But, step 4 was never mentioned before. Now, even though the guy mentions NAS box, I'm pretty confident that his solution would also apply to a networked share. I just don't understand what he's saying.