Minecraft 1.8.4 Singleplayer Account: JEC_REX
Crash Report:
[09:29:08] [Client thread/INFO]: Setting user: JEC_REX
[09:29:08] [Client thread/INFO]: (Session ID is token:495a0af37c404d819070d456d7818dba:9da6d20ba7c044988caab690ffadd786)
[09:29:13] [Client thread/INFO]: LWJGL Version: 2.9.4
[09:29:13] [Client thread/INFO]: Reloading ResourceManager: Default
[09:29:14] [Sound Library Loader/INFO]: Starting up SoundSystem...
[09:29:15] [Thread-6/INFO]: Initializing LWJGL OpenAL
[09:29:15] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
AL lib: (EE) MMDevApiOpenPlayback: Device init failed: 0x80004005
AL lib: (EE) MMDevApiOpenPlayback: Device init failed: 0x80004005
[09:29:15] [Thread-6/ERROR]: Error in class 'LibraryLWJGLOpenAL'
[09:29:15] [Thread-6/ERROR]: Unable to initialize OpenAL.  Probable cause: OpenAL not supported.
[09:29:15] [Thread-6/WARN]: ERROR MESSAGE:
[09:29:15] [Thread-6/INFO]: Could not locate OpenAL library.
[09:29:15] [Thread-6/WARN]: STACK TRACE:
[09:29:15] [Thread-6/INFO]: org.lwjgl.openal.AL.create(AL.java:156)
[09:29:15] [Thread-6/INFO]: org.lwjgl.openal.AL.create(AL.java:102)
[09:29:15] [Thread-6/INFO]: org.lwjgl.openal.AL.create(AL.java:206)
[09:29:15] [Thread-6/INFO]: paulscode.sound.libraries.LibraryLWJGLOpenAL.init(LibraryLWJGLOpenAL.java:164)
[09:29:15] [Thread-6/INFO]: paulscode.sound.SoundSystem.CommandNewLibrary(SoundSystem.java:1576)
[09:29:15] [Thread-6/INFO]: paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2572)
[09:29:15] [Thread-6/INFO]: paulscode.sound.CommandThread.run(CommandThread.java:121)
[09:29:15] [Sound Library Loader/WARN]: ERROR MESSAGE:
[09:29:15] [Sound Library Loader/INFO]: Could not locate OpenAL library.
[09:29:15] [Sound Library Loader/INFO]: Starting up SoundSystem...
[09:29:16] [Thread-8/INFO]: Switching to No Sound
[09:29:16] [Thread-8/INFO]: (Silent Mode)
[09:29:16] [Sound Library Loader/INFO]: Sound engine started
[09:29:21] [Client thread/INFO]: Created: 512x512 textures-atlas
[09:30:19] [Server thread/INFO]: Starting integrated minecraft server version 1.8.4
[09:30:19] [Server thread/INFO]: Generating keypair
[09:30:21] [Server thread/INFO]: Preparing start region for level 0
[09:30:22] [Server thread/INFO]: Preparing spawn area: 3%
[09:30:23] [Server thread/INFO]: Preparing spawn area: 5%
[09:30:24] [Server thread/INFO]: Preparing spawn area: 8%
[09:30:25] [Server thread/INFO]: Preparing spawn area: 10%
[09:30:26] [Server thread/INFO]: Preparing spawn area: 13%
[09:30:27] [Server thread/INFO]: Preparing spawn area: 17%
[09:30:28] [Server thread/INFO]: Preparing spawn area: 21%
[09:30:29] [Server thread/INFO]: Preparing spawn area: 25%
[09:30:30] [Server thread/INFO]: Preparing spawn area: 29%
[09:30:31] [Server thread/INFO]: Preparing spawn area: 33%
[09:30:32] [Server thread/INFO]: Preparing spawn area: 35%
[09:30:33] [Server thread/INFO]: Preparing spawn area: 39%
[09:30:34] [Server thread/INFO]: Preparing spawn area: 42%
[09:30:35] [Server thread/INFO]: Preparing spawn area: 45%
[09:30:36] [Server thread/INFO]: Preparing spawn area: 49%
[09:30:37] [Server thread/INFO]: Preparing spawn area: 56%
[09:30:38] [Server thread/INFO]: Preparing spawn area: 60%
[09:30:39] [Server thread/INFO]: Preparing spawn area: 65%
[09:30:40] [Server thread/INFO]: Preparing spawn area: 67%
[09:30:41] [Server thread/INFO]: Preparing spawn area: 72%
[09:30:42] [Server thread/INFO]: Preparing spawn area: 76%
[09:30:44] [Server thread/INFO]: Preparing spawn area: 79%
[09:30:45] [Server thread/INFO]: Preparing spawn area: 83%
[09:30:46] [Server thread/INFO]: Preparing spawn area: 88%
[09:30:47] [Server thread/INFO]: Preparing spawn area: 92%
[09:30:48] [Server thread/INFO]: Preparing spawn area: 97%
[09:30:48] [Server thread/INFO]: Changing view distance to 9, from 10
[09:30:49] [Server thread/INFO]: JEC_REX[local:E:e91ba50e] logged in with entity id 213 at (-36.5, 70.0, 246.5)
[09:30:49] [Server thread/INFO]: JEC_REX joined the game.

It usually says that it cannot keep up and is trailing 2000+ms