After a while my "Main" Arduino installation has lot of libraries and different boards ( from atmega to atttint and ESP286 ), which makes it very sluggish.
I'm user of Arduino since versions pre 1 ( with pde files ) now betatesting 2. I Even wrote several libraries for my own use and modified some public ones, for new chips or correcting bugs.
So my solution is to use a portable version, ans load only the libraries and boards I need in that project. That's the way other moderns ides like Michochip Studio 7 or Sloeber uses.
For me, not having portable it's a serious drawback, that prevents me to move from the version 2 beta to the new official 2.0
Other plus for me of portable, is having a complete version of my project, that can zip "as is" because newer versions of IDE or compilers, does not compile well, or don't comunicate well because of overwriten avrdude configuration files I manually edited.
Not to mention the posiblity of working fom a pen drive at any computer I can get.
I hope this can be addressed as a real serious problem and corrected promptly.
Regards