downlad
https://www.jetbrains.com/idea/download/
version 2016.2.4
Community Edition for free. Ultimate Edition 30 days trial
tune option
C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 2016.2.2\bin\idea.exe.vmoptions
or for x64
C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 2016.2.2\bin\idea64.exe.vmoptions
- increase xms and xmx
-Xms1128m
-Xmx2750m
change keymap
File>Settings> search keymap
Change it from Default to Eclipse if you like.
disable folding
File>Setting> search fold
uncheck “Show code folding outline”