When I launch the game, everything is fine. But when I open the world, I can't move very quickly, and the game crashes a few seconds after I open it. I've looked elsewhere for a solution, but there doesn't seem to be one?
This is the Game Output when the game crashes:
Completely ignored arguments: [--nativeLauncherVersion, 307]
[19:52:08] [Client thread/INFO]: Setting user: Toria_Warren
[19:52:13] [Client thread/INFO]: LWJGL Version: 2.9.4
[19:52:14] [Client thread/INFO]: Reloading ResourceManager: Default
[19:52:16] [Sound Library Loader/INFO]: Starting up SoundSystem...
[19:52:17] [Thread-5/INFO]: Initializing LWJGL OpenAL
[19:52:17] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[19:52:17] [Thread-5/INFO]: OpenAL initialized.
[19:52:17] [Sound Library Loader/INFO]: Sound engine started
[19:52:28] [Client thread/INFO]: Created: 1024x512 textures-atlas
[19:52:39] [Server thread/INFO]: Starting integrated minecraft server version 1.11.2
[19:52:39] [Server thread/INFO]: Generating keypair
[19:52:39] [Server thread/INFO]: Preparing start region for level 0
[19:52:41] [Server thread/INFO]: Preparing spawn area: 0%
[19:52:42] [Server thread/WARN]: Keeping entity minecraft:sheep that already exists with UUID 97418971-e586-4d5e-8e52-50e4aee978fd
[19:52:42] [Server thread/INFO]: Preparing spawn area: 22%
[19:52:43] [Server thread/INFO]: Preparing spawn area: 54%
[19:52:43] [Server thread/WARN]: Keeping entity minecraft:squid that already exists with UUID 983e9448-2c6d-43f8-80ea-93c410cdc292
[19:52:43] [Server thread/WARN]: Keeping entity minecraft:chicken that already exists with UUID cd9f8531-6087-460f-91fc-047f85337471
[19:52:44] [Server thread/WARN]: Keeping entity minecraft:bat that already exists with UUID 94ce8e17-d60a-498d-b83c-b162138db98b
[19:52:44] [Server thread/WARN]: Keeping entity minecraft:bat that already exists with UUID beb7c0d5-024b-404d-a5fa-fa4130b9d2e7
[19:52:44] [Server thread/WARN]: Keeping entity minecraft:chicken that already exists with UUID 210fe547-c914-4819-8c93-52871773cd00
[19:52:44] [Server thread/WARN]: Keeping entity minecraft:bat that already exists with UUID e8885058-7011-40c4-92df-9512cd6498de
[19:52:44] [Server thread/INFO]: Preparing spawn area: 70%
[19:52:44] [Server thread/WARN]: Keeping entity minecraft:creeper that already exists with UUID 674d8ee8-cf4b-4455-af36-5837b8d7786a
[19:52:45] [Server thread/INFO]: Changing view distance to 12, from 10
[19:52:47] [Server thread/INFO]: Toria_Warren[local:E:9dfcb3bc] logged in with entity id 339 at (239.39317946814094, 63.0, 293.2731424526306)
[19:52:47] [Server thread/INFO]: Toria_Warren joined the game
[19:52:49] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3085ms behind, skipping 61 tick(s)
[19:52:49] [Server thread/INFO]: Saving and pausing game...
[19:52:49] [Server thread/INFO]: Saving chunks for level 'New World'/Overworld
[19:52:51] [Server thread/INFO]: Saving chunks for level 'New World'/Nether
[19:52:51] [Server thread/INFO]: Saving chunks for level 'New World'/The End
#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000001a35c933, pid=11536, tid=10860
   #
3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C [ig7icd64.dll+0x6c933]
   #
7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
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8. An error report file with more information is saved as:
9. C:\Users\User\AppData\Roaming\.minecraft\hs_err_pid11536.log
   #
10. If you would like to submit a bug report, please visit:
11. http://bugreport.sun.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
    #
    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release