CLion takes forever to load Unreal project.

Loading my Unreal project takes about 15 minutes for CLion. My CMakeLists.txt ends up being 1.6 MB for Unreal. There are some steps that are being implemented in Unreal to break it down into multiple smaller files, until that happens are there any JVM settings I should adjust to improve load times?

Current JVM options:

# custom CLion VM options
-server
-Xss32m
-Xms8192m
-Xmx8192m
-XX:NewSize=512m
-XX:MaxNewSize=512m
-XX:+UseParNewGC
-XX:ParallelGCThreads=8
-XX:MaxTenuringThreshold=1
-XX:SurvivorRatio=8
-XX:+UseCodeCacheFlushing
-XX:ReservedCodeCacheSize=240m
-XX:+UseConcMarkSweepGC
-XX:+AggressiveOpts
-XX:+CMSClassUnloadingEnabled
-XX:+CMSIncrementalMode
-XX:+CMSParallelRemarkEnabled
-XX:CMSInitiatingOccupancyFraction=65
-XX:+CMSScavengeBeforeRemark
-XX:+ScavengeBeforeFullGC
-XX:+UseCMSInitiatingOccupancyOnly
-XX:-TraceClassUnloading
-XX:SoftRefLRUPolicyMSPerMB=50
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
-XX:MaxJavaStackTraceDepth=-1
-Dawt.useSystemAAFontSettings=lcd