running Unreal Engine Editor and Compiling Shaders on a Linux Potato PC

gistfile1.txt

# performace, try in order:
# 1) Settings/EngineScalability:LOW #WORKS!
# 2) foliage.forceLOD 1 #at console or ini file HELPS!
# 3) Settings/PreviewRenderingLevel:Android #POTATOPC!

# shaders compiling overloading CPU. No config will work to lower the number of child compile shaders proccesses, so just SIGSTOP all the 3 or leave one running!
pkill -SIGSTOP -fe "UnrealEngine.*ShaderCompileWorker.*"
pkill -SIGSTOP -fe "UnrealEngine.*ShaderCompileWorker.* [^0] " #keeps compiler id=0 running
# to increase shaders compile performance, put UE4Editor out of the way without SIGSTOP (or compiling shaders will stop working):
cpulimit -l 10 -p `pgrep UE4Editor`

# suspend/continue UE4Editor/shadercompiler to let it swap and release memory (6GB here) to use ex. firefox 
strRegex="Engine/Binaries/.*/(UE4Editor|ShaderCompileWorker)";while true;do pkill -fe -SIGCONT "$strRegex";read -p "SIGSTOP it";pkill -fe -SIGSTOP "$strRegex";read -p "SIGCONT it";done