Compile .el into .elc may shorten startup time.

emacs --load ./byte-compile-packages-in-elpa.el

Notice: This action is not necessary. It's possible cause some compatibility problems or install a latest but broken package.

You may want to update and upgrade all packages:

emacs --load ./auto-install-packages.el

If you encounter some problems while installing packages, runs it manually again (or more times).