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Whenever I play a mod or modpack on 1.8.x, it crashes as soon as I join a server or get on a world. Here's what the crash report says:

[18:43:21] [main/INFO]: Loading tweak class name me.guichaguri.betterfps.tweaker.BetterFpsTweaker
[18:43:21] [main/INFO]: Using primary tweak class name me.guichaguri.betterfps.tweaker.BetterFpsTweaker
[18:43:21] [main/INFO]: Calling tweak class me.guichaguri.betterfps.tweaker.BetterFpsTweaker
[18:43:21] [main/INFO]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[18:43:21] [main/INFO]: Patching Game Start...
[18:43:21] [Client thread/INFO]: Setting user: DJKreeperMC
[18:43:21] [Client thread/INFO]: (Session ID is <censored>)
[18:43:23] [Client thread/INFO]: Patching Key Event...
[18:43:23] [Client thread/INFO]: LWJGL Version: 2.9.4
[18:43:24] [Client thread/INFO]: Reloading ResourceManager: Default, Clouds-Pack (Modified).zip
[18:43:24] [Client thread/INFO]: Patching Minecraft using Riven's "Half" Algorithm
[18:43:25] [Sound Library Loader/INFO]: Starting up SoundSystem...
[18:43:25] [Thread-7/INFO]: Initializing LWJGL OpenAL
[18:43:25] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[18:43:25] [Thread-7/INFO]: OpenAL initialized.
[18:43:25] [Sound Library Loader/INFO]: Sound engine started
[18:43:26] [Client thread/INFO]: Created: 512x512 textures-atlas
[18:43:37] [Client thread/INFO]: Connecting to mc.popcraft.org, 25565
[18:43:38] [Client thread/INFO]: Connecting to pro.wynncraft.com, 25565
[18:43:42] [Chunk Batcher 0/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
[18:43:44] [Client thread/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x5766e0c6, pid=1848, tid=3520
#
# JRE version: Java(TM) SE Runtime Environment (8.0_77-b03) (build 1.8.0_77-b03)
# Java VM: Java HotSpot(TM) Client VM (25.77-b03 mixed mode windows-x86 )
# Problematic frame:
# C [ig7icd32.dll+0x5e0c6]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\DJ Kreeper\AppData\Roaming\.minecraft\hs_err_pid1848.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
AL lib: (EE) alc_cleanup: 1 device not closed
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release