Upgraded my media player from Raspmc running on a B+ to OpenELEC on RPi3.
Much better UI and database performance, and handles 1080 content much smoother.
One tweak that was needed to prevent interruptions/buffering problems to content coming over Samba was in advancedsettings.xml where I upped the buffer size and readbufferfactor
<advancedsettings>
<network>
<buffermode>1</buffermode>
<cachemembuffersize>314572800</cachemembuffersize>
<readbufferfactor>20</readbufferfactor>
</network>
</advancedsettings>
Silky smooth playback of all media I tried so far.
