Current version of Plex server (and the past versions for a while) seems to be useless with large Libraries (1.6TB -TV Shows, 1.2TB Movies, 1TB Music, 36GB Music Video, 4GB home videos... combination of mp4,mkv,mp3). Playback is fine if you can get that far. When navigating the UI on any Plex App (Roku, OSX, Windows, SmartTV... not web interface) the UI will be stuck on "Loading..." for over 20-30 minutes in some cases longer... when even after the initial UI finally loads when drilling down into a Library you'll be stuck for another 20+ minutes each level (i.e. Home>TV Shows>All Shows>Futurama) and again stuck at loading when backing out. If you use the web interface you're worse off, the content simply never loads.
Would love to hear if someone with similarly sized Libraries has had any success... or would love for the developers to list a max library size to prevent others from wasting their time with this.
Plex 0.9.15.3 originally on a Mac Mini (Late 2009) 2.53 Core 2 Duo 8gb... relaunched on a i7 1.7 8GB MacBook, (and my i7 windows gaming rig just to test) No channels setup or itunes integration, just standard libraries, across the wire and wifi and locally on the server as well.
Plex Server Log shows constant SLOW QUERY warnings... even after DB optimization, but even counting the seconds listed in the slow query it doesn't indicate why the UI hangs on "Loading..." for upwards of 30minutes... DB Optimization occationally reduces the wait time to just 5-10 minutes but it usually doesn't last long (without making media changes) and goes back to 20-30+ minute loading wait times...
Mar 22, 2016 00:05:50 [0x10bb36000] WARN - SLOW QUERY: It took 3300.000000 ms to retrieve 48 items.
Mar 22, 2016 00:05:56 [0x10bb36000] WARN - SLOW QUERY: It took 300.000000 ms to retrieve 50 items.
Mar 22, 2016 00:06:10 [0x10db81000] WARN - SLOW QUERY: It took 340.000000 ms to retrieve 6 items.
Mar 22, 2016 00:06:10 [0x10bc3c000] WARN - SLOW QUERY: It took 350.000000 ms to retrieve 6 items.
Mar 22, 2016 00:06:10 [0x10bb36000] WARN - SLOW QUERY: It took 5860.000000 ms to retrieve 50 items.
Mar 22, 2016 00:06:10 [0x10c0d7000] WARN - SLOW QUERY: It took 1720.000000 ms to retrieve 50 items.
Mar 22, 2016 00:06:28 [0x105a53000] ERROR - handle_stream_read error 2 End of file
Mar 22, 2016 00:13:32 [0x105a53000] ERROR - Error writing media: 32 - Broken pipe
Mar 22, 2016 00:14:23 [0x10b142000] ERROR - handle_stream_read error 2 End of file
Mar 22, 2016 00:14:59 [0x10d8ba000] WARN - SLOW QUERY: It took 770.000000 ms to retrieve 50 items.